As a cheaper alternative to Rohloff, would the Shimano Nexus be capable of serious expedition touring? Is it a durable hub, or does it need a bit of tweeking while on the road? I would probably use it with very low gearing to pull BOB on my folder, and I have ended up in some far flung places in the world. I guess that I am just fed up with my derailleur system and I am looking for some alternatives. Thanks! Bonne Route!