I have verified that I can run 2 of these displays from the Club 3D MST. It seems like it will work with any DP 1.1 monitors, even if they have funny resolutions.
However I have not been able to get my third display working yet so the surround testing will have to come later, but the adapter works.
However I am seeing that issue where the picture only sometimes comes on, and it goes off at reboot.
So far I have only tested the adapter with these 2 nvidia cards. I will test on some intel Sandy Bridge/Ivy Bridge/Haswell graphics soon.
Unplugging the adapter from the PC and power then re-inserting will fix it when the picture doesn't come on, so my unit might also need that firmware upgrade.
Each display was running at the full 2560x1700 resolution at 60 Hz when both were connected to the adapter.
Also, that seller on Amazon does include a US plug adapter with the kit so you can use it out of the box in the US without hunting down the right power cord.
Bill