I'm originally from Oz, and have a friend who's served for some time.
While he has not been in combat (who HAS who is in service now), he has tried out the various rifles available in many capacities - M16, FAL/SLR and Aug.
We discussed the Aug a while back. For some reason he kept referring to it as the "Steyr" - may have just been a term they use, or he MAY have been meddling with some before the army switched to it officially, I don't know.
He appreciated the 1.5x scope as a nice touch - taking him from 50% 300 yard head-hits to near 100%.
As a right-hander, he had no problems there with the bullpup. But some major advantages were that patrolling with the Aug is easier on the arm and back muscles (than with the FAL) because it's easier to hold - and that leaves your arms better off for shooting afterwards. Also, he claimed the advantages were shown at the range as it could be swung around between targets WAY fast - center of gravity being closer to the body, and ergonomics agreeing with him.
Remember, a lot here (no offense to many here who don't) fire off a bench a lot. You're going to have to "go bush" with your weapon, sometimes in up to 48 celcius in heavy clothing and carrying a lot of other stuff.
Battler.