Thanks
njkayaker . From my reading, you seem to know these units really well.
I know the Edge units well. The other units work similarly.
Tourist in MSN uses a hiking GPS and has useful comments about that.
GPS unit recommendation?
Note that I'm not saying it's the best option but there's no reason it can't work reasonably well.
It's just a low-risk option if you are "GPS curious". (But you have to include the issue of mounting it in your equation.)