Looking for citations for a face - out packet switch - imagine the ATFUS done using where displays are faceOut to the audience, at chest level.
IE the pack stays in dealer's grip with the cards thumbed to the side before pickup. The other hand comes over and takes them, thumb at the back and fingers to the front and displays the face of the cards by raising that arm up at the elbow.
I got as far as a break under a block to start for the count of one and dropping all but the last unseen (part of the block) one to effect the "all but one" of an ATFUS type swich.
Rather than reinvent an old wheel - asking for citations.
Thanks in advance,