I may be wrong but where the crown of the watch is situated is an indication where it should be worn.
Isn't this why PAM has either left or right sided crown on their watches for left handers and right handers, respectively? So does Citizen.
If worn on the correct wrist, it would be easier for the free hand to tweak the crown.
Anyway, I being too scientific about this. Where you wear your watch is your own individual preference. If you feel its right - it right.