Okay, if you bear with me just a little longer, I've put together a small utility for splitting the Cubemaps (or even the Panoramas) into the individual frames. Also managed to get it set up to convert between Cubemap and Panorama, or stitching the 6 individual images back into either persepective. I just have to do a few more tests to make sure everything is working, but it should be ready pretty soon!