OK, I played around with my Leica and figured it out. What Doug said is correct, the EHR appears to be the default mode. However the binos only use it *if* you select a ballistics profile (which of course you don't need and EHR doesn't use....). So go into the menu, select EHR to be safe, then select a ballistics profile (any of the built in ones). If you do that, the EHR range will display after the true range whenever you use the rangefinder function. You can set your turret based on the EHR and should be on target.
I'll be in the mountains next month shooting at some weird angles - I'll update the thread if I find that there's anything problematic with this approach.
Edit: I misunderstood how to think about this in my comment: you do need a ballistic profile for this to make sense so the way they work is fine. I wish the documentation was better, but I have used it successfully in steep terrain in Wyoming and Alaska last year. I really wish the EHR accounted for temp/elevation changes as well (Revic does, not sure if they have a patent), but overall its been good.
