I just ordered a 722k for my office, to compliment the 922 Sling in my living room. I am going to transplant it's M2T OTA module it comes with, taking it from the 722 and dropping it into the 922. $100 for the unit, $15 for the visit.
The UI on the 722k is lacking compared to the 922, if I recall. It looks like the shots I have seen for the Hopper.