I've been meaning to start a post regarding the new uc_stock module, but I've been caught up in other coding. To elaborate further on Ryan's comments, the idea of uc_stock is to provide a general purpose stock utility rather than a catch inventory management system (there's just too many different business models to accommodate a catch-all solution). Starting this, I've added two basic functions:

uc_stock_level
uc_stock_adjust

These will add for basic adjustments and looking up of stock levels. I guess we'll see what needed feature will come along in the future (workflow-ng integration perhaps?).