I'm going to be doing some trail riding with my cyclocross bike. And, if I have to, I may swap out my road wheels to the cross bike and see how that works. The cross bike is a 54 frame and is at the low end of the fit spectrum. Today I got my Ducati back from the shop and rode it home (10 Mi.). My neck was a little stiff at the start but better by the time I got home. I think my 1,000 mi. days on it are over but that's probably a good thing anyway.