Though I havent flown this plane yet and Im sure some people are going to correct me I can say.

The knife edge isnt too great (the fues side isnt wide enough)
In harriers it will rock pretty bad due to the chord on the wing (mixing will help but it will still rock)
Spins should be great but acheived a little differently than your standard airplane.
Hover is where I am placing my money that this plane excells
I am betting it will do some great slow flight (like a kite if you know what your doing) but this is not to be confused with a harrier.

Has anyone had this thing long enough to know how it survives stuff like walls and elevators and blenders. It looks like the Irvine wildcard, which I hear has a very weak spot in the fues.