While they haven't been as outspoken on encryption It's still an offense to refuse to unlock a device. If you're visiting NZ it's best not to travel with a laptop and to take reasonable precautions with your mobile devices.

NZ is legally speaking a few years behind Australia.

Just take a look at up coming legislation, I think its the MMP system that slows down these laws.

They will still happen just at a slower pace and with better timed PR.