I read a review a while back on one of the US sites of the Transition as a SS. the rider was doing North Shore stuff, and thought it was a stupid idea at first, but totally changed his tune after getting used to the bike. He loved it, and IIRC he had a pair of Totems on the front! I don't see any problems if you've got the legs/stamina to pedal the thing. I've got a hooligan On-One 567 which I've got 160mm Nixons on, which has slidey drop-outs, so I could easily convert it to SS. you could try an O-O 456 with a chain tensioner. Nice cheap steel frame, chuck some Lyrics, Nixons or Fox 36's on. Sounds like a bundle of laffs to me. Go for it, who sez a jump/trail bike has to have 100mm forks.