David Stone performed this on me, which worked out well for him, because I knew the routine he was doing, was watching him like a hawk, never saw what I was looking for, and he said "There, it's gone". I knew it wasn't because I was watching way too close for that to have happened. He told me to turn my hand over and look under my watch and BAMMMM... it was there. Totally smoked me. I've always wanted to try it since then, but felt like I would get busted (lack of experience).
I'd love to see someone going through the actions, the misdirection, etc.