Did you ever consider an inverter-style generator with 12 vdc outlets? If you did and chose otherwise, what considerations were there?
I am looking at the Champion 3100w Inverter generator - 120vac and 12vdc outlets - with remote start (convenient for kicking in that electric blanket when it gets really cold at night). I suspect that those 12vdc outlets would provide enough juice for most DC applications.
I'm not sure what you're describing with a inverter-style generator with 12vdc outlets. Do you mean something like the little Honda portable style gen? But why have a gen for 12 volt when you can just have a battery and some panels?
Of course panels need sun, and maybe that could be an issue, but then you can get a small cheap 2 stroke gen from Harbor Freight on sale for $100 and use that to charge you're battery if you need it. All this depends of course on what you're trying to power. If my down comforter and some blankets can't keep me warm I likely won't be out, so electric blankets aren't on my needs list. But I imagine those would need some juice!