I can't breathe underwater, but I can shuffle chips with either hand.
When I first learned to shuffle chips, it took me a while to learn with my right hand. I watched a youtube video, and worked on it for an hour or more before I could shuffle 8, maybe 10. Then I thought I'd move on to my left hand, thinking it would take even longer, but that came almost instantaneously. I figured it was because my brain already learned how to train a hand to shuffle chips.
I shuffle chips with my left hand about 90% of the time. While I'm in a game, I shuffle with my left, and bet with my right. When I'm sitting at my desk, I use the mouse with my right hand, so the stack of chips is in my left.