I saw this product over on CheesyCam's site and it looks like a cool idea for GoPros. This product allows you to mount the GoPro + gimbal on any standard GoPro mount because the power and control come from a cabled attachment. My GoPro is too old to benefit from this but anyone using a newer version would probably like this:
http://cheesycam.com/z1-rider-mini-3-axis-gimbal-stabilizer-for-gopro-cameras/