Non-switching non-euro (commonwealth though) rightie. Didn’t know there was any other way to do it. Switching sounds like a pretty tedious task to me.
Englishman: Fork, tines down, in left hand - turned tines up if necessary; allegedly there are people who are too refined for this but when it comes to peas and anything mashed, let’s be practical, say I. Knife in right, cut one bite at a time, small motions of the knife. Rest the knife on the plate when not in use but keep hold of it. For anything eaten with a fork when the knife is not required, the fork goes in the right hand. If the hands are needed for anything non-cutlery-related, the knife and fork are both rested on the plate with their handles on the table, or on the plate (not side by side) if the plate is mostly empty. Cutlery is parked side by side on the plate when you are done (on any occasions when other diners or waitstaff might need to know if you have finished; otherwise it’s just a shibboleth, IMO). Elbows off the table; it looks slovenly and you might rock the table.
If I’m eating something that requires a lot of cutting, I’m a non-switcher.
If I’m eating something that has a surprise! cutting situation, I’ll use the knife with my right hand, then switch the fork back over.
I rarely eat things that require cutting aside from restaurants, and even then it’s probably less than a quarter of the time.
I’d concur on tines up for things like peas but mashed food is simple to eat with tines down. Smaller portions are placed on the back of the fork. A much daintier way of eating than scooping it up in yer big ham fisted tines up approach.
You be as dainty as you like, but I can cope with more than a teaspoonful at a time without acting like a pig, you… you… tinesdownian! 
I swear about 10-12 years ago, Miss Manners updated the protocol and said it was now okay to not switch hands.
I eat identically - the perfect combination of pragmatism and propriety. Any other way is to me rather…vulgar. 
Exactly the way I eat. I can run through a steak in no time keeping the fork in the left, knife in the right.
At home, I can get by without a knife almost all of the time. We don’t often do sit-down-with-the-family meals … it’s catch-as-catch-can. Therefore, I find myself eating alone a lot … and I have no compunction about spearing a whole chicken breast (or slab of pork, link of sausage, etc.) with my fork, lifting it to my mouth, and just eating it like a shish kebab ( :o … but not really ).
Oh … and I can eat things like mashed potatoes or Stove-Top stuffing with the fork in my left hand. But anything loose like peas or corn … my dexterity gives out. My left hand has to do an odd-feeling rotation going from plate to mouth. Mushy foods stick to the fork and make it to the mouth … loose foods fall into my lap :shrug:
This is funny because my recollection from something I saw on television was that when the fork was first gaining popularity in Europe, the Catholic Church decried is as an insult to God’s perfect creation for lifting food, the index finger and the thumb.
I’m a right-handed non-switcher whose fork stays in the right hand. I used to get a lot of “are you left-handed?” questions. I developed the technique independent of any knowledge of the European method. Having had the American method explained to me, my immediate reaction was, “Well, that’s just stupid.”
What are you supposed to do with it?
I seem to recall reading somewhere that in Germany, you’re supposed to try this before you ever pick up the knife. Apparently, being able to cut the meat without a knife reflects on the cook’s skill at preparing a tender cut. I always wondered, though, what happenes when this fails and you have to employ the knife? Isn’t that insulting?
I do this too and I’m right-handed. It seems completely awkward to me to hold the fork in my left hand. I seem to do fine cutting with the left too. I feel like I hold the food more stable by holding it down with the fork in my right hand.
But then, I wear my watch on my right wrist too, where 99% of righties wear it on their left, so I may just be weird.
From my (very American) perspective (for which I was taught to switch hands, to never hold the fork in a fist, ever, utensils down between bites, and that tines should very nearly always be pointed up), I’d say the exact opposite.
Stabbing food and/or mashing it onto the back of the fork is what small children, who haven’t the dexterity to use utensils “properly,” do. It doesn’t come across as dainty.
Righty, non-switcher, and I’ve been known to push mashed potatoes on top of the stabbed piece of roast beef on the fork in my left hand. And then smush the whole lot into gravy for the perfect bite of food.
My wife and I actually had this discussion just a week or two ago. I eat European. I always have, I’m not sure how I picked it up.
My wife eats American style. I tried to get her to give my way a shot, but it just didn’t work out so well.
She calls me barbaric for eating in such a way, and I tell her that I am exhibiting class and manners in a more refined European style, which makes me better than her.
She replied by telling me to bite her ass.
I think I won. 
European or American style?
That’s how I was taught for good manners. And I don’t recall anyone not switching hands until I met my friends parents from England when I was a little tyke. I remember thinking that the “English style” was quite nifty.
I took a drama class in school and we had a guest (some renowned theatre actor whose name I don’t even remeber), he played a scene where he was supposed to be some kind of “uncouth mountain man” and he made a point of eating tines down, no switching, in order to appear “ill-bred”. The opposite was when stuffed into a tux with tails, I had to go through a whole rigamarole just to eat a piece of ham, and I wasn’t supposed to fiddle with anything I wasn’t using.
Cut with knife and fork, set knife down, switch fork to right hand take bite, set fork down while chewing, take glass, sip water, put glass down, do not fiddle with the glass (I kept reaching absent-mindedly to turn the glass by its stem), pick up knife and fork, repeat.
And on top of that, you’re supposed to swallow what you’re eating before drinking anything. 
How am I supposed to wash down the things I don’t like??
OMG! I forgot to swallow my phone before taking a sip of water! Ack! I’ve just failed my tux-'n-tails class!
Non-switcher here and always have been. I never put much thought into it. I guess I just never thought there was any reason for an elaborate, impractical ritual when I could spend that time much more productively by forking steak into my cake hole at a much more satisfying velocity.
I also think that pre-cutting a whole steak is for children and adults with special needs.