The concept of this trick is ingenious; Tenyo's instructions actually recommend "performing it for
yourself" first to see if you can figure out how it works. But I have found that removing the clips
on the opposite corners (particularly the lower left one) takes considerable effort and is not
smooth. Perhaps it will become smoother after more usage; I don't know...
Seconding this review. Removing the clips is difficult, and removing the lower left one is extra difficult. They are difficult as in "physically painful to remove more than twice."
Actuating the gimmick requires _significant_ force as well, and it makes a lot of noise (like a mechanical SLR camera) if not done _very_ slowly.
I have been practicing this trick for a couple of weeks now, and am starting to wonder if it will ever loosen up. I hope it does, because it is otherwise a cool prop and I can imagine some fun uses for it. I would not dare perform it for anyone yet, however.