Cutting the cable, lets talk options and media setups

So let me ask this of those you currently use PS Vue. Can it only be used on WiFi? I know they place restrictions on what you can watch when you're not on your home network (which is dumb IMO), but the other day I was traveling from the hotel to the airport on a strong LTE signal (unlimited on AT&T) and it tells me the network isn't avaiable. If that is true, it might be a deal-breaker since I do a lot of traveling during certain times of the year.

Does SlingTV have the same restrictions?