Using the two camera concept above just made me realize the perfect bypass for the size/time limitation, without a loss of frame or sound.
1) Is it possible to have Cam1 (master) synch Cam2 (slave) to all coding, frame rates, shutter, etc. ?
2) Make timecodes synched, filenames synched but add in an additional marker to denote the second camera.
3) Make the 2 camera switch to where camera1 is on and cam2 is off. On the automatic switchover, have camera 1 continue to record for perhaps 2 or 3 additional seconds as Cam2 is coming online. On switchback, same occurs with Cam2 to Cam1
4) With timecodes synched on the videos and similar filenames, aligning in editor would be a breeze.