Yes, I have, several times, a Levo and an Ibis Oso. Every climb was easier. Was I sweating, sure I was, because I was pushing, everything was just happening much faster going up. I could also just lay back and cruise up the climbs without breaking that much of a sweat. And that's my point. Sure, I could push and get a good cardio workout, but I was never at threshold like I am on my regular bike, and I sure as shit never went quad burning anaerobic like I do on the crux moves going uphill like I do on my bike. Though I suppose if you turn the motor off, that will happen.