I had a Riv Simple One fitted with a Rohloff. Generally, I'm happy with it. The biggest advantages are the uniform gear steps and the low, low gear, which allows one to feel he/she could climb a tree. I have it outfitted as a typical Riv upright with fenders, etc. The Simple One has a track rear dropout. As a result, it takes some real effort to change a rear flat. Would I do this again? It was an experiment of sorts -- I wanted a Riv with a Rohloff and have one. My other ride is a Homer, which is my ride of choice. Would I do this again? Probably not with the availability of 1x11. Also, I would make sure the rear dropout was better suited to a Rohloff. The only other issue I have with the Rohloff is the shifting hesitation as I move from the higher to lower or lower to higher gear ranges (the Rohloff has two sets of gears). Still, as virtually all Rivs, it rides beautifully.