manty,
QR does recruit asian people. I actually had a girl from Singapore in my training course last year but unfortunately she left to get married back home!
A300man,
part of our training is 2 observer flights, one in the A320 and one in the A300. The reason for that is that service in the narrow-bodied aircraft is different to that in the wide-bodied. I think now new recruits can get an obs flight in the A330 instead of the A300. Depends on rostering.