I played around with a more complex look...the silk and pearl looks seem beyond me yet but this had enough promise to try to develop it a little.

As emulated, the texture is isotrophic, showing more towards the viewer and also kicking back towards light sources.  The outer  layer of the drum wrap is a gloss coating (which gives rise to the more defined specular highlight and the reflection visible mostly on the edges).

The main issue I'm having now is several of the channels have absurd base values, which means the preview display in Poser looks very odd.