They don't seem to stick, no. Of course, I am careful that they're quite dry. I figure the dust/scratch risk is the same since you can get the same relative movement between negs and sleeves; I'm also currently using PrintFile sleeves which are kind of tight and rubbery so I don't reckon anything will move.

I think I'll stop worrying and transfer all my negs from their old (suspected to be PVC) sleeves. I have a 1000' roll of 70mm sleeves of unknown provenance that I've been using but now an suspicious of what they're made of.