Thank you for testing. I'll be loading it into my collection and we shall see how it responds

@Taezel

I can not guarentee this will not break a save. What I have done is the following though:

I created a new game with only this mod
I god mode spawned a few stacks of refined patchleather
I created a refined patchleather parka
I saved the game and removed the mod
I loaded the save
The refined patchleather laying on the ground was gone
The parka I made was turned into a parka with no inherited stats (no stats at all, so basically a useless item), however, I think this is normal with any mod that creates core items with new material and I don't think anything can be done about that, I can look into it though.

As far as "breaking a save" and turning into something you can't load anymore if you add or remove it, no, it shouldn't.

will this break a save?

@Taezel let me know what you think!

interesting. I was just considering a patched clothing mod, we badly need it in the DOD collection. We'll give this a shot

cool, its been hard keeping warm without much thrumbo leather :)