It's a very clever gimmick that allows you to do this miraculous transformation. With the very
basic, simple handling, you don't even need to learn any sleights; no palming or switching required.
But of course, your props aren't immediately examinable under these conditions.
You just
need to become comfortable handling the gimmick, so that you can keep track of its orientation.
Once you get used to the basic handling, you can then move on and try to add some switches that make
the routine seriously baffling.
This is a fun item to play around with, especially for a
beginner. Definitely something worth keeping in your bag of tricks.