Mike,
You bring up a good question (and I realize that different converters wire inverters differently): Can inverters be easily SWITCHED if one goes out?
Having a spare inverter is a good feature; but, what restrictions are placed on the appliances that were run by the #2 inverter?

How do Liberty, Marathon, CC, and any others handle this?

Also, can you switch over to gen/shore power when an inverter fails assuming that the converter has not wired it so that it can be switched to the #2 inverter?