I hopped on a TT bike at my LBS today - a $3500 Cervelo model - and much to my surprise it seemed to fit me very well. That struck me as a bit odd, because this was a 54cm bike, and I ride a 56cm road bike (my Ibis is actually 57mm). If anything this bike might have been a touch too large, but my impression was that I would be able to dial it in with an allen wrench in about 15 mins. Nice bike by the way.
Is that typical? Would a 56cm road bike guy often fit on a 54cm TT bike? Or does that vary completely between manufacturers.
Finally, if I haul this rig out on the group rides I do am I condemning myself to Fred Hell? I don't know if I would actually do it, but once I buy the thing I'd like to get very comfortable with the bike's handling?
Slap a pair of Zipps on that TT bike and it would be one very fast bicycle. But that TT position is going to take a lot of training to get used to.