Sorry, I forgot to mention the V4 shape.

There are several uber shader items, either for sale or included with DS - they are all the work of omnifreaker. Applying uberSurface, included with DS (or the Iray Uber shader base) before applying the character maps won't work, but applying them after (in the case of uberSurface while holding down the ctrl key for Windows or the cmd key for Mac and selecting Ignore for maps so that the textures aren't removed) will give an updated material set-up that will often look better. However, applying an alternative sahder will not add any new maps beyond the basics read from the Poser materials unless you use the Surfaces pane to do the job yourself - assuming there are extra maps included with the character (normal or SSS strength for example).