Poser 4 users can of course apply the textures manually if they want, so they aren't completely excluded. Another way of making MAT poses work is to parent the prop to something - if the prop is a smart prop (or hair) already, then that's taken care of. Alternatively a small dummy figure like lesbentley's MinFig can be used. However MAT poses which use the currentActor method may not work in P4.