True in most cases. But if you happen to have a steel frame with horizontal dropouts, and you're already running IGH or single speed, then you could get a framebuilder to install a seatstay splitter from S&S or Paragon. I'm toying with this idea for my Rohloff-equipped Salsa Casseroll.

One thing that's holding me back is that my Rohloff seeps oil. Not a lot, but enough that some would get on the belt, which might be bad for the belt, and negates the pants-leg-preserving advantage of belt drive. On the off chance that there are any Rohloff belt drive users reading this, can you comment on this issue?