My single speed experience is limited to a mountain bike with slicks, but I concider it to have 2 speeds, sit and spin or stand and mash. It seems like the light tubeing low trail bikes are set up more for the sit and spin crowd. I'm not a small person, and when I get out of the saddle on my road bike, the limitations of tire and fender clearences make them selves known. Again not knowing, I wonder how a low trail bike handles differently out of the saddle?
I've got a bunch of sport touring frames in the attic, so I've thought about building a low budget version just to see.