>>1044927I've crashed my bikes many times through my life and have never damaged my drivetrain in any way. Yes, it would make things difficult, but it's very statistically unlikely to happen. If you're really that nervous about it then pack a replacement derailleur and cables and go to your LBS for some repair classes.
Internal gear hubs are pretty cool, but not for hilly or mountainous terrain, and if you 're on a trip long enough to call a proper tour then I'm guessing you're probably going to need lower gearing than what an IGH is going to offer.
