I ran across the Houdini wind pants while siding the Patagonia site today:
http://www.patagonia.com/us/product/houdini-pants?p=24130-0-155&pcc=1128
3.1oz and a different fabric than the windshirt (1.2-oz 10-denier 100% nylon vs 1-oz 15-denier), slim fit, black only
Wind pants strike me as too fragile, but I thought this was interesting.
I see they have the full zip jacket on sale for $63 too.

