Here’s a easy test to determine yours. Hold your hand out at arms length with your thumb up centered directly in front of your face. Focus on your thumb. First close and open one eye, then the other while continuing to focus on your thumb. The eye you close that causes your thumb to shift to the side the most is your primary. You mostly target through that eye.
So depending on which was Scott’s primary eye he might not have had to retrain at all.
I'll just repost this here since the other thread with the same name seems to have gone poof.
I guess it really depends on future story plans and how popular or unpopular the change is with the fans.
Personally, I don't mind it. It gives him more of a grizzled warrior feel, which sort of works for the character. Plus, it reminds me of Age of Apocalypse and was one of only two changes I actually liked in that storyline. The other being Jean turning into the bearer of the Death Seed.