You can make it work the vive pro with a minidisplayport displayport adapter and the 3_1 cable. (mine provided with the omen x)
Just use the 3_1 cable to jump the power and usb connection and done. (best with a small vive pro cable)
I will try to use a hdmi to minidisplayport to use the full 3_1 cable but i guess will not work.