Update: A little over 1 month in on PS Vue and it's pretty awesome. I haven't even noticed I don't have cable anymore with the exception of Royals games, which I just watch on the FS app.
Last night NFL Network launched and you can also buy RedZone for $39.99 for the year - which is a great deal.
I'll say it works a ton better if you actually have a PS4 compared to the app on the FireStick or Roku. But even that is a small complaint.