Best Accessory yet --- Chest Harness warning
This is the most handy accessory yet, I absolutely love the fact I can check out the vids and recap what I've done without going back to the computer.
Just a heads up on the chest harness, It's not really a big deal but with the bacpac on you cannot fold the camera flat against the chest because it runs into the mount. This can be solved by adding a couple of "arm" mounts to the go pro or just dealing with the camera being faced down about 10-15 degrees.
Buy one now.