I've also been following this with interest, but keeping fairly quiet as I've not had any experience of these devices.
Brendan,
Are you aware of any AFCI being exported to or manufactured in Europe? There's no sign of them in any British manufacturer's range as yet.
Re: Test buttons,
I've found that the majority of people here have no idea that their RCD/ELCB (GFI) even has a test button. I always try to explain, but I doubt most of them go on to test even once a year.
