I have a trial subscription of YTTV to evaluate TVE and Channels DVR. I followed the first post and did not have any problems setting up TVE with YTTV. I believe I'm currently able to watch 117 channels in the Bay Area.
However, I was disappointed to find that some of the channels watch frequently (e.g. CNN, Tennis) do not support TVE. Did CNN or Tennis ever support TVE?
I was curious about the usage model among Channels DVR users. Do you use Channels DVR as your primary and just use YTTV app to watch/record the channels which do not support TVE?
This seems very cumbersome as I do not like the YTTV UI (except for being able to watch a show while looking at the full guide). Before looking at Google's list of channels supporting TVE, I didn't realize how many channels do not support TVE at this time. I hope that this list of supported channels has been growing over time.