Comment by coderenegade

Plenty of us righties out there like this. I write, catch, throw, kick etc. as a right hander, but surf, play the drums, jump etc. like a left hander. When I learned to box as a teenager I settled for orthodox, but it could have gone either way. Never had a problem with coordination.

I think it's genetic, and probably a spectrum. My mom's family has a few lefties, and a number of righties that play traditionally left handed positions in team sports.