I liked it too. My only concern is the inversion and the safety. I've heard that if you use the back line as a safety the kite will spin forever on one tip... don't know if that's true. I wouldn't use that suicide leash setup. Seems unsafe.

If I get one I'll probably (if possible) put a stopper ball on it to keep a little back line tension, and make up for that with a 5th line for a real (ie: kite can't fly) safety.

The only problem with adding a 5th line is that it could potentially invert the kite... of course it would also revert it too :)