Yes, that was my point about an IDP being as good as an Aussie licence.  If you’re there long term, neither is legal. 
I’m going to Iceland in a few weeks and Avis require it for non US/European licences.  So I’ve had to get one to satisfy that. 
The whole process reconfirmed how much of a scam it is, it’s just a template form issued for all Australian licences with my photo and dodgy handwritten personal info.  It doesn’t value add at all  
What’s worse, for a document that has a a primary reason of translation, why does it expire in a year?  It should expire with my licence.  It’s not like the English language is going to change and make the translation out of date.