It is all about scenario as usual. With the 5er barn, hard to heat, we went through 100AH or more just running the furnace when temps were near freezing. No solar in the woods either. Saw 200AH daily at times. 6 batts. Gen was a must. Recharging at 156 amps.
With the Class C, same conditions, same "lifestyle" for 12v, found we can go without a gen. C easy to heat. While "camping" toodle around town near the campground in the C instead of using the truck for that as before, and in the (limited in winter) sun can soak up some rays, plus you get alternator charging (which is a game changer from having a 5er). Result, don't have a gen with us anymore.
If I had a 2000 I would take it anyway just in case, but there is no place to put the Honda 3000 we have. (This C has no on-board gen)
So I could brag about how we don't need a gen, but is only because we don't have to heat that 5er anymore in the woods!