Bob's points are on-point. And if the Damon's BCC is working properly, the engine/alternator will charge the house batteries while driving
FYI, this post won't get seen by the crowd that has this set-up as standard equipment, being in the Damon Owners Forum...because it was a rather premium set-up a few years ago due to the cost of inverters and seen in RV's that are coming to be known as "All Electric".
The compressor (residential) fridge, inverter and generator auto-start are all tried and true systems. Putting them all together gives the RV the ability to run a fridge that is less impacted by level, is usually larger than the LP fridge offerings, and the fridge itself is less expensive for the builder to acquire (retail is over $1400 for the Dometic 2way vs. just over $400 for a similar sized apartment fridge).
BTW, if you look at the 2015-2016 Thor Motor Coach line-up, you will see that they are migrating to this set-up for most all their models. It is just good economics and the system works...just need to keep the house batteries in good order.
If you like to boondock (off grid camping) you might want to consider increasing the number of house batteries. If not the genie will kick-on in the wee hours of the night