I've tried this spread during more than a month to check how it works with me. So far, I've noticed differences from what the OP explained.
Here's my notes :
1ace : most likely "no", but I've seen rare occurences of "yes".
2 aces : most likely "no", but it's interesting to look at the card upon the 3rd pile because I've noticed it could be an advice to transform things into a "yes". So in a way we could say 2 aces are "maybe".
magician alone : always "no"
magician + 1ace : most likely "yes" but could be a "no" sometimes. Again it could be interesting to check the 3rd pile
magician + 2 aces : most likely "yes"
I use the fanning method for my readings so I usually don't bother much about shuffling. But in this case, it's important to concentrate on the shuffling and not stop when you're fed up but when you sense it's time to stop. Results are better this way.
I admit I sometimes prefer drawing one card in order to have more informations, even if sometimes it's difficult to determine if it's a yes or a no. But I'll go on with this method and see if the results confirm what I've seen so far.