When riding with a bottle or bottom bracket dynamo, I was looking for ways to engage or disengage the dynamo without stopping. Stopping for the purpose was a pain at some level, that the dynohub eliminated. Of course the mechanical dynohub clutch could be equipped with some cable to activate it remotely, but I do not anticipate this level of sophistication with the first attempt. In the past, Union introduced a cable remote for one of their bottom bracket dynamos, but I am not sure how successful that remote was.