Not insurance related, but still valid.
I'd check into the legalities of taking markers into oz, as I know they are pretty strict over there, it certainly used to be the case that semi's aren't allowed, and certain states IIRC personal ownership of markers aint allowed either, they have to be "owned" by a club (aka local site).
I'm sure once the guys down under wake up and get online they'll correct me, but worth some investigation nontheless.