I have a sherpa with a rolhoff hub fitted, very happy with it, love it in fact. But so far I use it for local cycling I may do some light touring at some point in the near future. At the moment I keeping wanting something a little sportier. I don't want drops, never liked them never been comfortable with drops. I just want something sportier.
So the question is would I be happier with an RST?
I would just buy the frame, and swap some parts around, I would most likely keep the sherpa frame, but I would go for lighter rear wheel build, so I could rebuild a sherpa in the future if I needed too.
Today I converted my specialized racing bike to flat bars to see if the sportier bike would suit me, it has 700mm wheels but with flat bars it is more suited to me, I never got on with it with drops, we never become one with each other. I used existing parts from the parts bin to do the converstion so no money was wasted.
Peter