I can also confirm that android maps work just fine with Sygic for maemo.

AND VERY GOOD NEWS is that you dont need to buy 2 different sets of maps to get it to work.

Simply download Sygic applications only (without any maps) from Nokia Ovi Store the application itself is free. Install it, once you start it it will say no maps available.

Then simply go to Sygic website & purchase Australia & NZ maps for Android. Once you download those copy all contents of maps folder into maps folder on your n900 (connect N900 in mass storage mode).

Once copied simply unplug the N900 from your PC. These is no need to reboot, just start Maps application & follow instructions to activate your maps.

ITS THAT SIMPLE.

Regards