saint-soldier, thank you for your response. I've spoken to a friend of mine who has been living and working in Sydney for a couple of years now and he says it's the best move he ever made. The only thing, however, is that he is White, so I felt that his experience would differ from that of a non-European person, hence my original question.
Ideally what I wanted was for an "insider perspective", a response from someone born and bred in Australia (or even an "ex-pat" who's been in Oz for a number of years), who can tell me what the place is like for a Sikh to live and work. I had a feeling it would be like most places (not any place is perfect, after all) and there would be some issues but I thought I'd check to see if these issues were more prevalent down under.
No further questions so far, but I'll be sure to "hassle" you if I think of any!