I use bar end shifters on my touring bike, but had never even thought about putting them on my IGH bike (DaHon Curve).

So are the bar end shifters you're using indexed to the Nexus hub? Mine are SunTour and are "friction" which is to say non indexed. Honestly, I don't like the Nexus "twist grip" that the bike came with because it seems backwards to me, i.e. you rotate forward for a downshift, when it seems more intuitive to me to rotate down for a down shift, not up.

Does the bar end solve this problem too, since it can be oriented differently in the handlebar and hence correct this problem (well, to me its a problem, maybe not to anyone else)?

Rick / OCRR