An update on the Ilford Postcard Paper in Australia: I asked at Total Photographic Supplies this morning and they did the run around for me and found the warehouse had 2 boxes of it in Pearl, sitting around. I do assume this is old stock - apparently the whole Portfolio range has never sold well in Australia, and they don't keep much on hand in any size. Which is fairly sad.
I've ordered both though, and we'll see.