A pair of Panasonic G7's is just too big to set up for normal 3D, the stereo base between two cameras would be too wide.
Even mounted vertically, the stereo base is too wide. ( I was going to crop the 4K image to (2160x2160)
The possible solution is a right angle scope. I could use one, or pair and have the two cameras set up in a "opposing" configuration for 3D video. Stay tuned!