On a touring bike, I think the Rohloff beats a derailleur system hands down. More reliable, better shifting, less maintenance, less chance of being damaged in a crash, probably a stronger rear wheel (no dish)cleaner, and possibly cooler.
A derailleur system is possibly slightly lighter but this makes no practical difference on a already heavy bike.
I will not go back to a derailleur system on my touring bike/commuter.
Mike S