On a tangent, a couple of times doing enduro laps at Highland I've had comments about uphill speed. One session I was there with a friend, he was on his Spur and I was on my Oiz and we sailed past a group climbing on much bigger bikes and one of them called out "you guys must be XC riders".
The second occasion I'd been doing laps with my son, who is slower on the climbs. He decided he was done for the evening, but I wanted to get in one more, and I had some energy in the tank so I set off at a reasonable pace on my Lithium. There were a couple of guys ahead of me on the climbing trail, I slowly reeled them in and then passed them, and as I did one of them said "I thought you were on an ebike, I feel really lazy now!"