Well, it has Bluetooth capability, so if I get a helmet-friendly Bluetooth headset, I can receive the instructions (as well as music and phone calls!) through the GPS. For now I just glance at it every once in a while and pay attention to the number that indicates how long before the next turn.
I took it on a ~150 mile group ride today and it worked very well.

I'm still thinking I will mount this on a crossbar, as it's pretty ugly right there. Quite visible, though.
[ This message was edited by: Orpheus on 2007-04-28 21:30 ]