If you're trying to test the validity of a 10-bit output, the test is really simple -- just go in a dark room and shine a single light on a wall, and then film it from the bright spot out to the dark. For the AF105A, record internally and externally, and then post the pics to compare.
I suppose that could be used to test whether or not it was a true 10 bit signal... but would be of little use for anything else... Banding maybe.
Of course any footage from the A would be better then what's out there now. Odd that Panny wouldn't hire someone experienced with the AF100 to go shoot a day's worth of footage for the A's release (obviously plenty of shooters here who could do a bang up job). Sony manages to get footage of their cameras up, even for the VG20 & 30.