Modern shooters still use the filters though there are many more colours and much more expensive. Older types, well, I have a PH iris adjustable peep, with 4 different filter colours and the ability to put on a prescription lens - lots of fiddly bits.

Peter, glad to hear from you and the rest of St Eligius's empire. I am doing well and in remission at the moment so I have much to do with my LE's.