I almost got one last week. Our local HD dealer has a GoPro stand and with all the latest goodies. And with a 15% off sale it was
almost too good to pass up. For now I have other priorities, but I am really interested in the latest offering
http://shop.gopro.com/hero4/hero4-session/CHDHS-101.htmlThis new model is a lot smaller and is still compatible with the remote. My thought is to strap the remote to the handlebars and take burst shots instead of doing a lot of video. I agree with not putting the camera on the top. I don't want to look like a Telle Tubby!

Looking at the mounts, it seems possible to do either a side or front mount with the new unit. For now, I will stick with my cheapie digital. I keep it hanging around my neck on a lanyard. Easy to pick up and blast off a few shots - usually one will turn out pretty good. After a while you get a knack for "shooting from the hip". You certainly don't want to even try and aim using the screen! Another hint for this type of shooting is to super glue a button to the shutter switch and/or power. Makes it easier to feel the buttons with gloves (if you don't use fingerless, that is).
Good luck and I look forward to seeing / hearing about your setup and trip!
Best Regards,
M