If you are just tapping off of the 12v system via the 12v battery (which I think is best as it doesn't mess with the hybrid powertrain), this mode will work with any vehicle, hybrid or non-hybrid. All vehicles that I am aware of have 12v systems, even Teslas.
The big benefits of this setup with Toyota Hybrids are 1) the 12v battery is in the back (for easy access) and 2) the inverter/converter assembly draws power from the high-voltage battery to power the 12v system when the car is on (in Ready Mode), so the engine only runs intermittently to charge the high-voltage battery.
I put in a plug to easily plug in a 1000w inverter. I will post pictures later, but the system is very similar to this method favored by Prius brothers and sisters.