It costs an arm and a leg. On the other hand I daresay it's worth the money. Had an opportunity to shoot a Steyr AUG Z (civilian version, semi-auto). In my opinion its ergonomics are superb.
In-ability to shoot off hand around cover is the largest drawback.
Yes it's a drawback. So far (thankfully) I haven't encountered a situation when I needed to shoot a rifle around the corner off-hand (left-handed). Even in the Army. In fact, I don't recall ever shooting a rifle around the corner right-hand either. And if I really needed to shoot around the corner while having an AUG rifle - I'd switch to my secondary weapon for that.
So again - a superb weapon! I would make it my weapon of choice (perhaps I will - it's only a matter of money