Yes, the main thing is to "know your rig", which you have done. Then you can adapt to whatever happens with the set-up you have. Also tells you what changes you might need to the OEM set-up if you have a scenario not covered.
If you are running normally at just over 13.6 once the alternator warms up etc, then if you power an inverter from the engine battery, that could bring it below 13.6 loaded voltage and now no "alternator charging" to the house side.
Some MHs have inverters that operate from the engine batt (ISTR to run the overhead TV above the cab)
