I already finished the Product Attribute and Layered Navigation according to the previous version of Category Tree.
However, K. Aurillie just updated the category tree yesterday, some cat and sub cat will be added later by K. Roy (please see in Simpass Teamwork, as she already put it there)
You can check out the demo store here http://iposhq.net/
But for some attribute set, I didn't create the product yet as the category will be changed in term of order. I will once do it when it all updated in Magento.