basically the pefromance they way that Mr.Harris does it that he peforms a double lift then mimics the movemnet of simple swicth then he shows that the card swicthed then you say let me do it slower and then do the simple switch
confusing huh lol
or you can peform they way that Mr.Blaine does
I have a video on the move just click my profile and submitted media.
hope this helps.
Alvin