Thats all I ride mine in. I dropped to a 13T front and it lugs around great now. I put My HMF on staurday and rode all day yesterday at Turkey Bay and almost think its geared to low now so I might drop a tooth or two on the rear to get the top end back up and gain a little clearance in the rear.
Yeah, put a pipe on the thing and rejet it and it lugs great. The only thing we've done is cut the steering stops a bit as it doesn't turn tightly enough for the really twisty stuff. We're hoping that one of the aftermarket companies comes out with a stem that has the stops adjusted for tighter turning.