Thanks for the fur-sewing tips, KLK! There's a couple things there I kinda knew, but it's all exactly the kind of stuff you always wish somebody would tell you before you start! (Oddly, I would never have thought of using a vacuum on the cut edges - so sensible.)
I have a reindeer hide in my storage locker that I bought in a moment of weakness. (Oh wait, maybe there's two reindeer hides. Make that pathological weakness...) If you've never felt caribou or reindeer hair, it's not like any other kind of fur. The hairs are hollow, so it's light as a feather and so warm. Suddenly making a coat seems even more appealing. I better start soon so it'll be done for the winter!