First of all, I'm a bit surprised that the article does not even mention Club Mate.

Second, it's catching on in the Netherlands through the underground. All hackerspaces have their own supply line, either through their own import, or through other channels. There are now several wholesalers who sell it, and I'm starting to see it in small cafe's as well.

I've also heard that there is a cocktailbar in Amsterdam which uses Club Mate in some of their cocktails.