A grid tied hybrid system that could be used on an RV!

The whole point of a grid tie inverter is the idea that sometime during the day you will be generate more solar power than what you are consuming and can "bank" that power in "the grid". This seems HIGHLY UNLIKELY for an RV that is going to have a limited amount of solar panels.

For clean, easy power installation would be an inverter/charger with built in transfer switch AND input for shore power, generator and solar like these from Samlex. You still need a solar charge controller and a DC distribution panel but you no longer need a converter.