@andi52 I have 8 of the things on the list and treat my mask as an item of clothing. If I'm out in the open I don't wear one eg walking to the shop, but then I can give people a wide berth or risk whacking them with my walking stick
I'm a lot happier having the ones I have, compared to the generic 'medical' style ones, which would start to get very expensive.
I have tried a scarf, nearly boiled to death. There is a difference wearing one in winter to keep the cold / wind off your face, compared to summer when it's hot even in summer gear. Scotland does get hot and I do get a tan each year.
There will always be people using a get out clause, whether legitimate or not.