I might give this method a try - last one was acid etched, seemed simple enough and I didn't lose an eye - the method you outline seems possibly a bit more earth friendly however ...

I was thinking of grinding/etching some museum glass one day (or the cheaper AR Reflection-FreeŽ)- might be a bit of extra work getting through the coating properly but I thought that at least with one side still coated with less reflection that maybe a GG could be used sans dark cloth in a few more situations than normally ... Your thoughts ?