I have already tried Matmatic in Poser 7 on V3 without any modification to the script at all.  It runs fine, at least, with those settings.  The concept of VSS came in after Matmatic and has been under development for quite some time.  If you want to do node manipulation then VSS is the way to go until the Pro version is released.
The problem with the Basic Ultra Shader for Matmatic is that it lacks the necessary nodes to control AO, texture shades, etc.  For the stark realism you see in Face_Off's product, you will see in VSS.  Reading closely the posts, if you were inclined to, you could strip out the node arrangement from Face_Off and apply it in VSS.  The versatility is to control the shader nodes to apply more realism and apply to multiple models in a scene at once.