Found these on eBay today, WWII US Army ski leggings. They wouldn't be hard to make for anyone with sewing experience, and they would be great hiking. I like my modern nylon gaiters, but I'd like something for use in the forge as well, and nylon is a distinct "NO!".

Even if you don't like spats, gaiters are great for hiking. Even with boots little rocks always seem to find their way into shoes.