I got one of Bruce's Messenger Mirrors this week. I'll post more about after I've had a chance to use it, but here's a video of Bruce talking about his bicycle mirror design.
I recall you're not really a fan of mirrors, so I don't know if you'll like this one or not. Tried it this morning and it works. I have to fiddle with it a little more than larger mirrors -- the small size means precision is important -- but once I get it dialed in I can see behind me just fine.