Fencing provides a very good leg workout. It involves a very specialized form of movement that can take some folk a while to get used to, and that IMO is quite different than most other sports - including most other MAs.
There are two distinct elements - moving your body forward and back, and manipulating your weapon. It can take quite a while to develop competence at both. And even after a couple of years you may not be able to watch skilled fencers and figure out what they are doing.
It can take a while to get good enough at it to even really figure out if you like it or are any good at it.
Coming from other martial arts, one thing I didn’t care for was the “one touch stops the action.” No matter what you are doing right and the other guy is doing wrong, if your opponent manages to touch you in the correct place and depress his tip an eighth of an inch, he gets the point. Just an aspect I didn’t persoanlly care for.
There is a big difference between fencing recreationally vs for competition. Make sure your school/instructor supports whichever you prefer. It can suck if you want to just fence recreationally, and the main focus of the school is on electric competition.
The three styles are quite different - in terms of skills and equipment. I preferred foil, but my club was emphasizing epee. So I found that a bit frustrating. So you’ll have to ask what the club offers when.
You sweat a lot! As a result, loaner equipment - jacket, mask, glove - can get really stinky. You will want to decide on whether the club keeps their loaner gear clean enough for your standards. If you want to buy a jacket and mask, it will cost maybe $100. And there isn’t a huge market to resell them it if you quit.
Fencing does require some amount of equipment. There is a learning curve to learning what style of grip you prefer, and which of the vendors your prefer. Blades break, and electronic equipment must be maintained. Find out what equipment you need to buy off the bat. To compete you may need a jacket, knickers, socks, glove, electronic vest (for foil), at least 2 complete electronic weapons, and a body cord. Will cost a minimum of a couple hundred. Electronic components are resaleable.
Make sure the club enforces safety. For example, no one should be permitted to fence without at least a mask and jacket.
One final thing - I only fenced for a couple of years, belonging to one club and competing in maybe 10 competitions. But IME there was a pretty high percentage of assholes in the fencers I met. There’s something about the attitude I encountered. Don’t know if the snootiness reflected the “aristocratic” history of the sport. But there were a lot of guys with attitudes. Moreso than I personally encountered in the many other martial arts I did for several years.
And a lot of fencers get into things like grunting and screaming during matches that I kind of considered silly posturing. I mean, I was coming from full contact fighting where the guys would keep quiet and just try to kick the shit out of each other. Thought it was silly to have guys screaming over tapping each other. Like I said, just my opinion based on my limited experience.