Disclaimer:
This is the sort of post I like to see here on NZFF, but not from me:) I have too many vested interests, so I'll put those aside and just give the facts, jack...
After watching the Froogle video and reading the reactions, I wondered if you could actually install Orbx NZ airports without the region. So I gave it a go with Queenstown. The answer is 'yes', although I will point out that I do own both FTX NZNI and NZSI, I just don't have them installed in Prepar3d v4. So I installed Queenstown into P3Dv4 which 'only' has VLC plus my own stuff... although it does have FTX HD Trees.
FTX Central didn't even comment that I didn't have NZSI installed, it just went ahead and installed NZQN. For the initial install I removed my own photoscenery, which was as far as I was prepared to go to go 'default'.
I will try the other NZ airports when I have some spare time.
Here's some screenshots showing VLC + NZQN. You results may vary, as I said I have FTX HD Trees as well.





Then I activated the Godzone Subscription, the installer normally looks for FTX NZQN and makes some changes (to the underlying photo plus the facilities) so I needed to make these changes manually -- if anyone wants to try FTX NZQN and Godzone Sub without having to un-install/reinstall the sub, just ask me how.








The only real issue is the level of the lake near the airport -- you'd need to decide whether you could live with this or not:



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