I've trained and competed with a few of them boys back in the day, and I can tell ya they're more size than skill.
Remember going to HQ one night ages ago and a big brawl broke out between me and my 3 mates and some 20 non-australians (no need to be racist). We did well against them, but still copped a pounding having been grossly outnumbered. Bouncers just stayed back and watched for the most part, before they stepped in and broke it up. Cowards. One mate was knocked out, another banged up bad, and me and Ryan were sore as f**k ... but we returned the favour two fold pretty much. The bouncers knew us, yet they didn't have our backs! Their excuse was "we thought you were doing so well, we let it go a little longer". We asked them do we get their pay for the night for doing their jobs? Arrogant f**kers! Our association with them pretty much ended that night.
We still give them shit when we/I see them. Some of the security work around at various shopping malls and quiter pubs. Everytime I walk past one, I give him shit with "Oh, better not have a fight break out and need me to do your job for you!"
Edit:
Actually, it was last year I returned the favour at Church when one of them was getting pounded by a group (maybe 4?) of drunk patrons on the dance floor. I just sat back and watched ...