Following, I too have interest in this.

We're currently comparing YouTubeTV and Hulu+Live TV. With our Roku & YouTubeTV we are having no issues with the AT&T hot spot. With Roku/Hulu/AT&T Hotspot, Hulu thinks we are not at our home base, so it forces us to switch to where it thinks the new home base is. Hulu only allows 4 switches per year. I'm sure there is a little more to it. For now, definitely leaning toward YouTube. Oh, we also tried with our FireStick and same thing as Roku above, need to switch home base.

We recently started trying a Verizon Mobile Hotspot for the 5er. I got a Chromecast for the TV since it was not a smart TV. We were down in the panhandle of Florida and we could use it for Prime Video, YouTube, and CBS All Access. Hulu will run off any mobile hotspot. One of my co-workers does that. Also had wifi for the laptop and tablet. The Verizon Hotspot has been nice. The hotspot is on their prepaid plan so it is truly unlimited and you can use it month to month or only when you need it.

T Mobile hot spot for us using an Amazon Fire TV Stick. We Love it...with good signal have no issues streaming with unlimited 3G...but we also have T Mobile 20G/mo 4G hot spot for my work

We use Verizon mobile hot spot to watch Roku Nd Netflix. It works great when there is no internet.