Hello,
I also gave some try to this delightful unsupported feature. I added a second GPU in my server, and tried to dedicate that one to a VM (in order not to mess with the console).
Sadly, with this configuration I was unable to redirect the VM display to the dedicated GPU. It appeared in the Device Manager, but it acted as if no display was attached to it. When I tried to update the driver, it sometime couldn’t start (the driver).
I tried with an nvidia 6200 and the well-known ATI 5450.
Has anyone made some new test since the Update 1 for ESX has been released?