I did build up one of my old 26" MTB's with a BBSHD to primarily ride it on aggressive off road...an 08 Santa Cruz Nomad. However, the beauty of the motor is that it easily powers this 50 pound beast on pavement and dirt roads. It doesn't matter that I have an 8" dual crown DH fork on front or that the 6.5" travel rear has a piggyback, coil, DH shock. It doesn't matter that the front tire is a 2.8 and the back is a 2.4. The bike will achieve 40.8 mph max on pavement. In fact the very competent suspension and tires allow the bike to go fast on pavement without much in the way of jittery handling or scariness. I know of no road bike or hybrid that allows me to plow through a rock garden and then pull out on pavement and haul ass.
So yes...the MTB platform with a motor conversion or factory built emtb is much more multi-purpose and comfortable than just about anything else that's classified as a bicycle.
So yes...the MTB platform with a motor conversion or factory built emtb is much more multi-purpose and comfortable than just about anything else that's classified as a bicycle.