Quote - in poser scene with IDL and shape-lights/ambient sources, posersurface can reflect light similar to specular reflection, in absence of any directional source.  bill has discussed this in some threads here and/or at rdna.  I don't know if he sells shaders in store here incorporating said node set-up.

I think this is incorporated in the EZSkin node configuration I'm using now, via altspecular node plug.  It also uses reflection plug, but only to pick up "edge" rim lighting on the surface, it seems.  

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Tools :  3dsmax 2015, Daz Studio 4.6, PoserPro 2012, Blender v2.74

System: Pentium QuadCore i7, under Win 8, GeForce GTX 780 / 2GB GPU.