I have a P320rx. I shot it quite a bit in practice and then in one 3-gun match and thought it was ok. Then I took it to a 3-day pistol class. I almost decided to put it away for irons after day one. I struggled with it. The damn red dot got in my head and I wasn't focusing on my fundamentals. But I pushed through and ended up being very happy with it afterwards. I think there are good applications for them. Competition use, folks with aging eyes, etc. For the everyday defensive shooter, I'm not so sure they make sense.