I'm one of the guys that are pumping Apidra. I used it with my MDI's before, but it's also perfect (for me) in the pump.
It kicks in really fast, and as mentioned above, is almost gone after 4 hours.
As for the availability in Australia: I'd check with Sanofi-Aventis, the mfgr., and see if you can get it there.
Here is the US website for Apridra, maybe you'll find something useful on there:
Apidraź Fast, Flexible Mealtime Insulin for Blood Sugar Control
Good luck ! Cheers,
Mike