I have a GoPole and a Backscatter tray, and I use the pole just slightly more often than the tray.
I found the pole to be easy to slide into a gear bag for snorkeling trips on the beach, and the pole is just awesome for hiking. I managed to climb down a steep hill to a waterfall in the mountains very easily thanks to the pole, great hiking stick. But that's all stuff where I don't need a light, and I'll be honest, I still use it for pictures a lot of the time, so the stability isn't as much an issue.
For carrying the pole, I've got a boltsnap where the camera mounts and another at the other end, and I clip it off just like a stage bottle.
But when you are filming with lights, such as for cave diving, a tray is very, very handy. Though, there I have found that I like to put it on top of my slr rig, the more mass and stability, the better for long video clips.
I think what really grinds people's gears is when a manufacturer or reseller starts a topic where they just want to argue why their product is the best. The truth is, your product could be awesome and it still won't be for everyone, so you get a lot further if you don't go out of your way to promote yourself and instead connect in a more "organic" way.