well I might disagre here, IF a GUY wishes to shoot that caliber a little ways out there knowing ranges and drop will be super handy, as from say 150 225 yards, is a BIG drop no??
being able to turn a dial to yardage (if you know it) can save a poor shot maybe into a kill?
as for what scopes can you add that system too, best suggestion there is contact Leupold and ask them, I think they can add it to a lot of modern models and several of the higher end models
I have it on a few VX 3's, so know that is one of them for sure it can be done to!

its NOT that costly to have added either, so no reason NOT to have it, NOT like it adds any weight or ?? to things!, it can ONLY help you!
and at times they even offer it FREE when they run sales on them, but you will need to know your load data for them to make it come close, and its just that CLOSE< NOT 100% , if you get it MAKE sure you shoot it at ranges you will take shots at in the field, DON"T just poke and hope its right!