Side loaded to my Nexus 7 since the day it was released.
At this point it would be hard to live without the application; I use it all the time!
The 'Quick Tune List' is the fastest way to change channels. I don't use the DirecTV remote much if ever at this point.
LiveTV works well but it does re-buffer a tad at home. Does not re-buffer often but it will do so every few minutes. Smooth as butter from a few hot spots I have tried outside of my home. Still the 'LiveTV' is a great option and I use it a good deal as well. Other than the small buffer issue I have no issues of any kind with this application. It is pure heaven!
Only had to obtain the pkg file and set settings/security option to allow loading of packages from sources other than the play store.
And no--- my Nexus 7 is not rooted!
NOT ROOTED AND NO WORK AROUND'S USED OTHER THAN SIDE LOADING
I have attached a screen shot to show how it looks on my Nexus 7.
Model: Nexus 7 (32G)
OS: Android 4.2.2