I hadn't seen any MAT files for Props but I decided I'd try it anyway. At first it didn't work. But I learned that you have to have a Figure loaded for the Material files to be accessible - even if the Material file has nothing to do with the Figure. Strange huh? Everyone else may have known this for a long time but I hadn't seen any posts on it. Anyway, I utilized my new found discovery to create MAT and Texture files for Poserstyle.com's wonderful Mike Napoleon Clothing set. The MAT file is now in Freestuff.
They only work on parented props I believe. ~EA