Like I said before, XCM is entertaining in it's own right, with or without 'magic'. A magician does not need 'XCM' to look credible. I've never seen Burger whip out a XCM move...
I think magicians do appreciate it more because of reasons already stated.
That said, XCM can sometimes move too fast for someone to actually follow what is happening, and if you lose your spectator, you've lost your audience. It's no good to put a card in the deck, do a bunch of insane moves (that make the whole thing look fishy), and then say "tadda! I found your card!"
You may get grins and giggles from it, but if you lose your audience, then you might as well have stayed in your bedroom in front of your mirror.
As harapanong (abruptly) stated, you need to be impressing and entertaining people, not just showing off. If you just want to show off. Stay home. If you entertain, then go nuts!
And actually, XCM IS card juggling. Sorry to burst your bubble.
Look it up:
Juggling:
1. to keep (several objects, as balls, plates, tenpins, or knives) in continuous motion in the air simultaneously by tossing and catching.
2. to hold, catch, carry, or balance precariously; almost drop and then catch hold again: The center fielder juggled the ball but finally made the catch.
3. to alter or manipulate in order to deceive, as by subterfuge or trickery: to juggle the business accounts; to juggle the facts.
4. to manage or alternate the requirements of (two or more tasks, responsibilities, activities, etc.) so as to handle each adequately: to juggle the obligations of job and school.
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