What do you guys think of using a light that you mount on your head (or helmet) instead of mounted on a bicycle? Since my bike was stolen, along with the mount for my light--rendering my light useless, I've been thinking of this as an idea. I no longer like mounting things directly to my bike, thus giving theives more chances to steal things. But I've never seen anyone use head mounted lights around here. Do any of you use them, and what do you think of them?