Bar end shifters are able to use either drivetrain, its the left Brifter and FD interaction that causes problems.



XTR wastes money on gram weenie parts .. avoid aluminum axles in hubs .. on a touring rig.
second tier is more practical..

dont Know the advantages? do the Math see the ratio patterns

http://sheldonbrown.com/gears/ & http://sheldonbrown.com/gears/internal.html

and do the same for what you are riding .. to know what a particular ratio feels like rolled out on the ground.

Allfine 11 speed is still Vapor hardware.. wont ship, as I hear, till well after the next Vegas trade show in the late fall .

But, Rohloff IGH drivetrains have already been ridden around the world several time on different riders bikes ..