Although I have access to NDA privileged materials from PLX, the only information necessary  to perform the proof of concept test demonstrated here were the default switch settings.  And this only because it is an RDK board.  I have neither the interest nor knowledge to design my own PCIe switch board, and am relying entirely on off the shelf items from either PLX or other vendors in any Hydra implementation.  So PCIe switch cards are as open as other off the shelf items like video cards.