Threw together a quick PiP video using the keychain camera on-board my brushless Muggy.
Main camera: Sony HDR-SR11
Onboard cam: keychain cam from planeinsanerc.com
I yelled "clip" at the beginning as a marker for syncing the two videos. lol. Obviously I didn't put any time into editing this quick test video, but I thought I'd share it here anyway to show one good use of the keychain camera.