In reply to:

.whilst not exactly being "thick as thieves".
Wasn't that the title of a Split Enz album?

I think that's an album by another group from down under, INXS. Come to think of it I think it was called "Listen Like Thieves." Their album "Shabooh Shoobah" still sounds great after all this time. Too bad about the singer.

As a bass player I have to add that the bass part in Split Enz's "I Got You" is one of my all time favorites.