How does it compare with the rohloff system? Anyways it seems to be significantly more expensive thus I don't think it will become widespread.
This is a chain system, to transfer power from the bottom bracket to the wheel. AFAIK, Rohloff is gear system built inside a wheel hub. How would one compare those?
It can be used with the Rohloff system. But, I think you need a compatible chain ring since they are talking about a new tooth design requirements. The Rohloff system has the chain ring attached to the hub gear. So you presumably have to change that chain ring yourself.