well.....the verdict is in. DirecTV C31 clients do not work with Monoprice HDMI over Cat6 wall plates!
The Cat6 cable is high quality shielded 23AWG, all keystones and connectors on the cable are also shielded.
I have a Sony DVD player that I have been testing with and it works flawless of the same wall plates, no dice on C31 clients though

The wall plates have an optional 5vdc input at each end, I haven't tried though.
The genie, HR34 (not sure of exact model number) works great over the cat6 wall plates. It must have more hdmi sig. strength or something?
Atleast the c31's are small enough to zip tie to the back of the TV's, but....the RF remotes are terrible! I could not get it to work with C31 on back of TV unless it had line of sight. I know it's an RF remote, the installer gave me 3 of them, one for each box, I also watched him program the remotes and select "RF" on the screen.
I guess I'm just used to higher quality Dish equipment !