Oh!  DS is very different than Poser in terms of materials.  There are aspects of that shader I described you can't do without nodes.  DS does have nodes, but they're much more complicated and much, much less documented.  Also, you can't implement linear workflow with DS without Luxrender, which means the shader will always be incorrect. 

Regular workflow drops colors out of the gamut, makes midtones muddy, blows out light values, and under exposes dark values.  I've seen people almost entirely mitigate everything but the gamut issues (can't do anything about those) with materials, lights, and postwork.  But that's a scene by scene solution, not a consistent one.

Also, the more elements there are to your shading, the more incorrect everything becomes without linear workflow.  2 SSS elements, diffuse shading, reflection, specular, and some form of bounced lights is a lot of elements to have work incorrectly.  Add in the fact that darker skin tones means a wider range of values, including the mid to darker range where regular workflow really starts going wrong, and its just really, really difficult to do well.  Not at all impossible, just hard.

Latexluv -  Showing my nodes means making sure of some particular shading details.  I'm testing some specific variations and combinations of properties right now.