FWIW, my motorhome came with a generator, CONverter and INverter. Over the years I never used the INverter. The circuit it was part of controlled the "entertainment" (TV area), 2 outlets in the front of the coach (including the outlet for a coffee maker) and, surprisingly, the 2 outlets in the bedroom.
Last year, i got no power from anything connected to the INverter.It failed. Seeing i never used it anyway, I disconnected (removed it) and bypassed it. No problems.
Want a cuppa coffee on the road? Fine. Start up the genny...or simply buy a cheap percolator and use the stove. Watch TV? Use the genny. But make sure you don't annoy your neighbors.
Now...my style of "camping" was to use campgrounds for most overnighters and all extended stays. That means shore power which renders the INverter useless. The few times we spent a few hours (overnight) at, say, WalMart, we the coach batteries (sparingly)... our propane heater did fine for about the 6 hours we needed it..then on the road again), the fridge uses gas or electric and we did fine without TV for those few hours.
But that's me and my camping "style". Oh...and INverters can be expensive.
INverters can fail without warning. CONverters get weak over a few years,