Its kind of... convoluted. The card is in the middle, then you push it into the deck, now the ace is on top rather then in their hand... It just doesnt really make sense. Its overcomplicating the effect. Rather then a straightforward transpo, its getting lost in weird things you put in there because of the sleights youre using.
If you want a good, in the hands spectator transpo thats straightforward, check out Joel Given's Scarne Solution.
Cheers,
Lucas