I'm visiting Australia this year for 3 weeks and I wanted to know legal size, concealment, and assisted opening laws. I wouldnt want to get there and have my knife taken and I also dont want to leave it at home. Ill mostly be East coast, Sydney and up and down that area. Also i wondered about multi tools, legal or not? it would either be a Leatherman Surge or a SOG Powerlock 2.0 EOD. Thanks in advance for any help.