Fishman473, I can give you more reasons for not having one than having one for touring but it sounds like you need an excuse so go ahead. I've got two bikes with SON Dyno hubs that are used mostly for commutting and like them a lot especially for the tail light. I wish the headlights had a strobe function for daytime riding. I don't have experience with charging devices but my understanding is that you'd be charging a spare battery for your iPhone more than charging it directly. Others will correct me if I'm wrong.