Looking good, two things though;

You can't ignore the envivonment with this system.  Obviously you can have most of the sky and environment settings however you want them, but be sure that the shadow colour is always black and set the shadow intensity to 100.

In the next stage of that WIP I think I'd do something with the sky 'cause reflecting a flat colour tends to make things look flat - especially on very reflective objects.

Cheers ThunderStone, I'm really glad the description helped you get into it