Can you use the same model with different skins within a map?

For example, a modified arthas and the orginal arthas

When you import a skin does that skin apply for every instance of that model?

What are the ways around this if so?

OK.
1) Get the Arthas model out of the mpq
2) Copy it to as many difrent skins you want on it in game.
3) Convert them to mdl
4) Open the mpl in notepad or something an change the texture path. Textures\Arthas.blp to what you want
5) Save and convert back to mdx
6) Use tft importer and import the skin and the new arthas model.
7) Change the custom path of the skin you import to the skin you put in the imported mdx.
8) In objekt editor copy Arthas and chnage the copys model to the new one WOILA you got it man.
=)

Cool, cool - I'll give it a try, cheers