If you do not need sound from both, I would just use a DV -> HDMI cable(or an adapter both on one card). It will work just as well, but may lack audio(some of them may work AMD used to send HDMI with audio via DVI + an adapter.).
Then just use the Nvidia control panel to set it all up.
yes audio isn't necessary at all. Just hoping there was a solution for the setup as it exists now. Otherwise I have to go out and get adapters