dave-sounds like yer setup is like mine-bennie special and a doctor on the side for me. i think you have to decide which targets yer gonna engage with which sight. going back and forth is ok as long as they are not in the same array, otherwise, the clock's ticking. i can still engage faster with the dot (doctor) than thru the pro-diamond, but you have to get used to changing your gun mount-that's imperative. last year in vegas i shot 1 scope, a TA21, and it was really fast for the close stuff-but i could never shoot it on the 300+ stuff, so i went to the current setup.
engaging closer targets with any kind of magnification takes some time to master-but no different than the handgun-gets down to what an acceptable sight picture is at any given target.