I have a Shimano hub and a crown-mounted headlight. I can't remember the manufacturer. Some Dutch company, I believe. It's a very good "be seen" light with stand light and photosensitive on/off switch. It was good deal, but it's not bright enough for actually lighting your way. For commuting in the city, it's fine. For other times, I supplement it with battery lights. As has been said, on tour, depending on how late in the day you ride, a light may not be a priority. But when you do need it, you'll be glad it's there.

My issue is both with the brightness and with the location. I have a platform front rack that is awkward to use because of the light, and putting anything on the front rack after dark blocks the light (and often requires that I turn it off to avoid sending the reflected light back at me. Turning it off unfortunately also disables the tail light.) If I were to do anything differently (and I hope to) it would be to get a generator light that was brighter and had more versatile mounting options. I hope to upgrade to one of the IQ lights.

I have no issue with the hub. I don't feel the resistance at all when the hub is not producing power and have to really pay attention to feel anything when the hub kicks on.