Hi Daniel
I made some Mohair gaiters for the rebound springs over two years ago. I didn't show them in these photos, but they are holding up well, although very greasy. These were the first pair which I hand sewed!!!! Since then I've sold a few but I don't have any spare at the moment because it depends on MrsW and her sewing machine.
You can see in picture no22 that there is nothing around the spring except grease, so they have worked well. When I get to the end of this job, I have a modification up my sleeve which will add something else to the gaiters for a bit more protection.