Hopefully, they've been on the road for a couple of months now, maybe they can drop by and let us know how it's working out. I know Rich Luhr uses Internet In Motion for his trailer, and he is able to get connected almost everywhere. If there is a Camping World nearby, they advertise as being able to install the system, it may be worth checking out, even if you put the stuff in yourself.
BTW, I had to install a water heater in place of the huge original, and it does look like a hack job, but at least it doesn't leak

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And, a piezo ignitor is great for avoiding the Telly Savalas look...