I have used stereoscopic shootings with 2 gopros 1 but they are to close to make a decent effect. So I have used 2 gopro3 black edition but the link cable that I have used with the gopro1 doesn't work with black edition, anyway after several flights I have had too many issues so now I am building a special bar with two contours so I can choose the distance I need. Regarding POV actually I am monitoring just 1 camera I don't think you can find 3d glasses, anyway you'll need 2 transmitters to send 2 streams, the total weight should be too much at the end, not to mention power consumption.