I had a guy that worked for me but one to commute to work @ 5 miles a day. 35-40 mph side streets only, said it scared the crap out of him but was what he could afford. Pretty cool little machine all blacked out.
We had a Rukus. We rode the wheels off that thing in the pasture and on some logging roads.
Not so good as a rock climber.
Absolute disaster in the mud. (But I think all two wheelers are crap in the mud)