Nearly 10 years old and back from the dead....
As of now there are a few alternatives here in the US.
Klingspor, Mirka Abranet, Wurth, and even Dewalt. Recently I was given a few 5 packs of a Dewalt branded mesh paper. It is much thicker and stiffer than the other mesh products that I have seen. It is a 2 layer product with a backing. It seems to work pretty well. So far I have only used the 120 and 150, but I do have some 220 also.