http://www.youtube.com/watch?v=ONspKwDfw5Y
I have been trying this and failing I might add but it is fun.
W-wait what? Is he just setting up for an extra long moebius setup or what?
Is confuse 
No, the concept is, you put the slipknot around your arm near the elbow. Because the yoyo is not attached to your hand you have the freedom of 5A without the CW cracking you in the beanbag or face. Check out Jensen’s thread in the Video forum. I have tried it, I think it is pretty fun, it is awkward at first but I think it is really fun.
I’ve been trying it all day and it’s fun! My hands felt so free but the only complaint is that your pinky might feel chaffed. The side of my middle finger is getting it’s cuts. Tricks that are based from the GT itself are a lot easier. GT’s look amazing on this. Have fun!
~Spin On!
You can’t wait until I come out with longer string for x1A…
I do this once and a while… It’s easy, the only hard part is making up new tricks with it. 
now I GOT to try this :o