I’m right handed, but eat with the fork in my right hand and knife in the left.

Is the issue that people have difficulty cutting with their left hand? Because if you can the process of eating is pretty efficient: hold with fork, cut with knife, move food on fork to mouth …

I'm in Europe and I did the same as a child because it just felt the most natural. But you better believe our teachers in school would try to force the opposite. The argument was that imagine if everyone cuts with their right hand, but then you cut with your left and cause a lot of annoyance by bumping your elbow info your table neighbor's elbow.

Absolutely a non-issue in reality obviously. But nowadays I do hold my cutlery "properly" as a result. To me it now feels natural to bring the fork to my mouth with the left hand. Or the right one, really, but I default to holding it in the left.