Magic and Cardistry

I'm just wondering how many people here do sleight of hand magic, and I mean more than party tricks. I'm also curious about cardistry.

btw, for those of you who dont know, cardistry is "card artistry" or the visual manipulation of the motion of cards, like pen spinning.

Here's an example:

video example:


I have had an interest in this (cardistry), however It is extremely difficult to get right.

Did you practice cardistry though?