At AN it was said that you had to live in Essendon, barrack for Essendon and have a funny handshake to get on. Never noticed anything unusual myself.
Interesting thing would be what happens if someone challenges their rejection in court. Its happened in the U.S. and while the "aptitude" bit is easily upheld, the "personality" bit has always been thrown out.
There is no research that says you have to have the right "personality" to do a job, provided you are obviously not an out and out fruitcake.
Most of the personality tests are actually designed as diagnostic tools for mentally sick people, NOT as selection tools for sane people presenting to recruiters.