just completed a two row by 3 column shot using a combination of the Cube and Phase AFD along with a 28mm lens. I found the markings on the Cube to be very friendly and returnable shooting the first row then moving upwards to the second row. Again while this might not have been the greatest subject matter I can see where the Cube can be used to do multiple row image merges.
Here's two sample images:
The first just after it was merged while the second shows what I feel is a usable crop. No post processing has been done as I wanted to leave it as it came from the camera and yes I can see the dark streak in the sky right of center. The object of this was to see if I could obtain a multiple row/column image using the Cube and I proved to myself it can be done.
While I think I proved what I set out to I also proved (at least to me) that you just can't beat a technical camera for flat multiple image stitching.
Gotta run
Don