For us: i have of course normal shore power, and a 3000 honda that are both tied in going through a transfer switch. Then on the inside just above my electrical panel is a 400 watt inverter. I have a basic connection at the inverter to run two receptacles powered only by the inverter. If i need to use 12 volt power converted to watch tv or use computer etc at table, i simply use the inverter powered receptacle and turn on the inverter. everything else is run through the normal house power supply. Generator takes care of things that need more power. For us that works well and is very inexpensive. I have all led lighting and two group 31 agms. Solar power for maintaining batteries, generator and of course food and beer. so for us, works great! Good Luck & Be Safe ! ! !
