I can't beleive that Austraila has a knife law! Look Crocodile Dundee had the most massive bowie knife ever!
I carry a knife as a tool. Granted its usually just a pocket knife or a leathermen (he he). I don't carry a gun, but I have wanted to make a holster for my 1911... and Mike Phelps seems to have a pretty nice one in his profile picture!