I am a forced changeover. Was a full lefty, but went to Catholic school as a child and was switched. Now I write and throw righty, but was a switch hitter (in baseball, potty-brain) and used my left foot almost exclusively. My left eye is dominant. I cannot even hold a rifle on my right side - I cant close my left eye by itself.
I’m mostly left-handed. There are certain things I do mainly with my right hand, though: use the mouse;bowl; certain hygine needs (from TP to brushing my teeth); hold a glass or mug to drink from…I’m sure there are more, but some things, like using the remote are a hard thing to call since I don’t notice which hand I use more since I do use both for the task.
I’m willing to bet that most people who consider themselves ambi are amongst the “missing” lefties that scientists mention: supposedly, although only 10-14% of us end up left-handed as adults, 35% of people are primarily left-handed before starting school, and have it conditioned out of them by well-meaning (but wrong, IMO) adults.
The only thing I do right-handed is write. Everything else is done left-handed.
99% Lefty, the three things that I know I do right handed are using scissors, shooting a shotgun/Rifle or Bow and computer mousing.