Thanks for posting this, lmckenzie.  I installed it and it asked if I wanted to replace my newer copy of some files for the older ones, which I answered no.  Mat Pose Edit started fine but being it a smart prop, I don't have too many options, plus it saves the values different from the numbers the Material Room shows.

I don't think I understand how to do what I need to do with MAT Pose Edit. 

 Right now I was able to make a Mat Pose that only changes the Opacity map with your previous hint but I want to hook it up to the Specular value like bagginsbill explained to avoid the ghosting effect shown in my previous post and that is what is giving me trouble.  I think I need the shader tree for that as that input is in the Posersurface tab.