It reminds me of the whole "I shot iron sights on my M16" stuff back in the day.

I came kicking and screaming into modern day AR optics, but I came nonetheless.

Same will happen with handguns. I don't have an optic on my carry gun, but I have a few guns with them, and it's faster and more accurate. Presentation on the draw takes some work, but that translates well to iron sighted pistols, so it's time we'll spent on your fundamentals