For the bedroom, I got a Omni Mount QM100T. It tilts but does not swivel. According to the mfg, it can adjust from +15 to -5 degree tilt. I went with this unit because angle was not an issue and it doesn't portrude out too far. It's going to be on the wife side of the bed and that corner is not all that large to begin with.
Last year, I had the dealer install the "official" mount that Airstream uses in the trailers now. It's an Omni Mount 75/100 CL cantilever mount. It tilts, swivels, pivots. They also included a backing plate that has a large velcro strap to secure the TV when traveling. I think the plate is Airstream's innovation. The Omni Mount site doesn't show anything like that. This mount is over the one of the dinette booth's.
I can post pictures if it helps.