I an older guy and by the time someone said that I should have an issue being right handed, left eye dominant, I just figured out how to shoot that way, head tilted enough to get a sight picture with my left eye. My Class Sergeant in the Academy told me I was going to shoot left handed - I said I will shoot right handed and score Expert. I graduated top in the class. This included training myself over the years, (again, accidentally, because nobody told me I had a problem), to use my right eye when shooting rifles. I can use both eyes open with a red dot, no problem, but it took a little work, because by the time I had my first red dot, well, someone had told me I had a problem...