I have two hoppers each with an OTA USB tunner for $30 extra. With the new big four feature that auto tunes to all four networks at once if you are watching just one I now have seven tuners in each hopper for a total of 14 tuners.
Having two hoppers also gives me a backup plan, if one hopper goes out I can still watch tv.
With the directv genie or say a new hopper with more tuners if the main box dies you could be out of tv for a week. Out here in Nebraska it takes a week to get an installer to your house and dish won't just mail you a replacement.
They will send a replacement of the Hopper is clearly the issue. If the issue could be something in the install then they will send a tech but if it's the reciever they will send a replacement in the mail.