On the sedan in Japan, the car has rear winshield wipers, so good luck on finding a JDM Legacy in NZ or USA.
I doubt I have seen anywhere that has a stock I/C spray button. I do know that some of the other non-USA models have additional features on the car for that button. In the USA, it's just a dummy/blank panel that you can just drill through and install your own switch/led or jack that you want to install on it.
Keefe