Lazers are expensive,fragile,and require batteries. I like things simple on stuff that may need to be operated fast and well, with severe consequences for glitching.
OTOH, I saw an article recently where two small revolvers, both carry guns, were fitted with lazers, and fast COFs showed a BIG improvement in accuracy and no loss of time. I find that quite interesting.
I'd prefer to have a good light myself, but the idea seems worthy of testing.