I purchased and installed an Atwood a few years back. I guess one would classify me as a "Workamper".
DrewE pretty well covers it. I like mine and not taking "Navy Showers". I had to in the service but now I make adjustments as needed so I do not have to. Personal choice.
When moving from one project site to another I do overnight in rest areas and such. I have a 40 gal freshwater tank. With DW and myself the water holds out for two days. We do not conserve.
If we boondocked I would want my regular dual source hwh back. Sometimes I wish I had never swapped out.
Why would I like to swap back? My tankless can get finicky. For unknown reasons there are periods of time that it will pop the safety on coil. One must go outside and reset it. I have not found the scenario that causes it yet.
BTW- you do not want to have the cheap charcoal water filters on your fresh water line. Those little pellets will end up in your coils, reduce flow, and in some instances will cause the safety valve to lift. I have had that happen once. Took a few hours to clean and clear the system.
It is o.k. for those who will have full hook ups most of the time with only one or two days running on internals. Propane use is down, as well as electric. But it is not perfect solution. There are trade offs. If only camping a few months out of the year I would not install one.