Thanks for the reply wny!

I'm optimistic about the 47cm fitting. Even thought I'm only 5'2", I normally ride a size bigger frame than other women my height. I'm not really sure why, but I think it's related to the fact that my body type is somewhere between that of a 'typical woman' and a 'typical man'. My MTB has a 16" WSD frame, my commuter has a 16" MTB frame, and my roadie has a 49cm frame.

I checked out the geometry on my roadie frame. It has a 515mm top tube and a 110mm head tube (compared to 520/105mm for the 47cm Sherpa). Really, the two frames seem fairly similar, except the standover on the Sherpa is 12mm higher.

I think I'll head to my favorite LBS this week to talk to them about the Sherpa. I would have to order the 2011 model, which is kind of disappointing, because all the 2011s will have lower quality steel for the frames according to the Rocky Mountain website.