Recently discovered this FANTASTIC site

& will soon be uploading some of my challenge efforts.
I came here to ask a question & got distracted by this thread so here's my take on it:
I too made a displacement map by duping the figure, desaturating, blurring then adjusting levels. Loaded this into another copy of the figure which I chromed then ran through the glass filter, using my disp map as the texture. For the extra touches I did some selective cloning & painting white for highlights, before using a gradient in overlay mode to finish.