My friend the Bass player has 3 Shure SM 57's he bought when he started out back in the 70's. Around 1998 when I had my music store He brought them by and asked me to take them apart and clean the small windscreens. They mostly were smoke stained but not clogged up like you think they would be after over 20 years. So after I cleaned them, out of curiosity, I plugged them in to the studio system and A-B'd them with some brand new 57's.
There was no difference at all.
These mikes look liked hell and the small screens were dented.
He still has them and they still sound great.
Because I leave the foam windsocks on all my 57's and 58's they are well protected. I bought these smaller sized ones that fit the 57's and those are secured with black tape so they can't come off.
The windsocks also protect them a bit more when they are dropped.
If a singer hates a windsock, then I let them remove it but they are told to put it back when finished.
I have a open top foam storage bin and they are all pointing straight up in there. At our rehearsal space they live in the stands for months on end.
I have one AKG condensor mike that is also always on the stand ready to use in the studio. It has a foam wind sock too.
Don't worry about dust.
There is a thin layer of foam inside most mikes that you can remove , clean or replace.