I printed out a half-dozen sets that I’ve sent out (US & Canada) with the caveat that they pass them on when they’re done and someone else needs one. They might be around but I haven’t seen anyone volunteering to pass them on so haven’t any real idea what’s up with them. Don’t even know if they worked for the recipients as I didn’t get any kind of report afterwards.
But the original metal one does still seem to be in circulation. Here’s a link to that thread.