Even though Docm doesn't want people to have it, anyone can easily get a hold of the skins if they want.
I don't understand why he doesn't want them to be public though, as what's the point of withholding your textures that make the game look nicer? But oh well, it is Docm's stuff, so I guess you should comply with not distributing it even though it's stupid that he doesn't want the textures that he already has released to the public in form of L'Aigle to be distributed in NW.