My S2 are both milled by CZC for their RDS plate. As I get older and have a harder time seeing the front sight, Red Dots are getting put on more and more of my guns.
I'm more accurate with the dot because I can actually see the sight. For an iron sights gun, if its a bright fiber optic front, then I'm just as accurate because I can actually aim properly.
The dot doesn't make the gun or the shooter more accurate, it just makes it easier to get good sight acquisition.