No, I haven’t, but then again, I know very little about respirators.
Thank you for such a detailed article. I was surprised your most recommended full face respirator is Italian and even more surprised that is readily available in the US but hard to find in the UK.
When analyzing the Mestel products, did you look at the TP 400/3 AS? Any reason to discard it in favor of the SGE 400/3BB?