Since they are cheap, I'm gonna try one. My main concern is do they work well or are they fiddley and unreliable. I ride pretty far to the right (farther than most). I think that if I knew there was nothing behind me, I might be tempted to ride a bit more to the left. Might save ya a few flats per year. As far as the looks, I don't need a mirror to make me look like a Fred, my slowness and cheezy Nashbar jerseys take care of that. I"m not interested in "looking the part."