I sem to remember pics of JHK or Sam's Superfly with XX on it, and the caption noting the tight clearance of the crank to chainstay. Bottom line is that it works for them.
I hear (and read) what you're sayin' about the arms, but that 156mm q-factor is so tempting. I really do notice the difference between mtb and road in terms of q-factor. A narrow distance would be quite nice...my measurements don't seem to show the actual q-factor as the issue (rings as I mentioned before).tskdmz said:i have the 28/42. the rings are not that close. it's the left arm. if you have the choice, certainly buy the 166 q factor versions. that said, i still haven't had any contact.