Nice! You'd have to be pretty damn good I'd say to run that. Maybe a big guy too. I thought muscling my 315+ lb. DRZ around through the woods with my 140 lb. self was a great feat! But yeah I ride knobs sometimes to work to hit some trails on the way back and it's something else feeling the outside knobs squirm and start to walk while railing a corner. And yeah, it's a whole 'nother world with the 17" rims and sticky rubber.
What's your alias on TT? I couldn't find you. Ha, and I gotta say it takes major cojones to ride a scooter on the freeway. That one's pretty cool though!