Tristan, thank you for rationally analyzing the claims made by the PVC industry, and showing that - surprise, surprise - their statements are loaded with inaccuracy and written to intentionally mislead the design community. It is only through the work of the USGBC and EBN/leed user that designers, builders and end users can recognize that there is a larger impact from building materials than what were are told by product manufacturers. One doesn't have to look very hard to find substantive research documenting the human health and eco-toxicity impact of PVC throughout its life cycle.

In summary, very good post!