I wear my wrist watch on my right wrist, and have a vague memory of an accordion teacher getting me to switch from left when I was about 9 or 10, 40 years or so ago. but not sure how reliable that memory is! Certainly having it on the right side avoids problems with the watch scratching the left bass side. I’ve heard occasionally of other accordionists doing this. Are other folks here similarly right side wearers? For those that still wear watches