I frequent the
Escape Forums and actually do not recall a Dometic stove top mentioned. The Suburban gets lots of mention however.
LOTS of gas devices use a second regulator. My propane powered Onan generator has a very large diaphragm regulator in the housing, but gets its gas from the regulator at the cylinders. Stoves do too.
I carry a portable butane single burner and a electric hot plate with me to cover all possibilities.
I think your question is worthy of some discussion on the Escape forum as you have a lot of people with the same equipment on there.
Charles