Obviously this thread is about exposed windage, elevation turrets but having both exposed (without caps) and scopes with tall turrets that do have screw on caps, they are just as user friendly. I don't think the exposed has any advantages over the capped turrets, especially if I have to dial for range. Removing the cap is occuring when I'm setting the rifle up for the shot. No time is ever lost in the process removing a turret cap. Couple of my Sightron's have the caps over the tall turrets and some of them do not. I do love my Leupold VX5HD CDS dials a bit more but mostly due to the low profile and auto locking(zero stop) feature.