On the Divide Ride I met a Danish tourist with a Rohloff hub on his mountain bike. He loved it after 18 months touring Europe then across the US and then on the Divide after starting in Prudhoe Bay Alaska. He was doing 100 mile days offroad with no problems.
I have since used original model Rohloffs on two friend's bikes-one a Moulton APB and the other a Bike Friday Pocket Llama. I did notice the low gear noise mentioned above but found the gear spacing excellent. Both non-touring friends are pleased with their hubs.