I am still a little confused by your statement.  When you apply VSS, you initiate a synchronization python script which adds the nodes and intergrates any present texture maps connected to the model's PoserSurface.  But, now, rereading your response, I understand exactly what you mean.  Unfortunately, VSS would require some modification, perhaps extensive modifications, to apply textures the way you intend.  It can work, however, will the script allow substitution of old for new?  I don't know and I haven't tried it.  Only BB could elaborate further if VSS can be used in such a way.  Unless you are will to try a small experiment.