I live in very flat Southern Florida. I use the engine braking on the 650 for stopping. I don't think I will ever wear out my brake pads. But wonder how it would work going down a really steep hill. I recall in my youth going down a hill in Southern California that was frightening in a car. I think it was in Glendale. My brakes were just starting to fade at the bottom of the hill. If you go down this kind of hill in 1st gear would the engine over rev? What effect would you have if you used the Power button. I can't imagine what it would feel like if you had a hair pin turn at the bottom.