Looking for opinions on this scope in the 2-10x40 or 3-15x42 configuration. Since they are still fairly new I'm having a hard time finding any useful information about them. Most searches seem to want to bring up more info on the tactical razors. I'm mounting the scope on a custom 7mm-08 for mainly whitetail, but will also be used for prong horn, mule deer and such out to 4 or 5 hundred yards. I hear the quality of the glass is top shelf, but how well do they hold up to abuse? Can i depend on them to hold zero after some rough treatment in unfavorable conditions?