Nice review of the kit and affordable at £65! My camera kits all used a fork of the CHDK (Canon Hack Development Kit) called Stereo Data Maker. It was specifically designed to sync internal clocks between multiple cameras via USB, it unlocked some amazing camera features. Allowing for time lapse, motion detection.
I love the the Raspberry Pi setup, that might be something i'd try out. I'm currently heading out on holiday with my FujiFIlm W3 - which has a micro HDMI output and stores images and videos as .mpo (side-by-side JPGs) The still camera quality is good, but video resolution and light sensitivity isn't that great. Playback / viewing on a 3DTV direct from the camera works really well. I also have a 3D auto-stereoscopic android tablet - pretty insane, the problem always seems to boil down to the software in these cases though. It is really awkward to use, but the results are stunning. Nice to see the kit get cheaper.