I commented elsewhere here on the video of a test flight. In that video they achieved that the aircraft flew like a normal plane with lift provided by its wings

I commented elsewhere here on the video of a test flight. In that video they achieved that the aircraft flew like a normal plane with lift provided by its wings. This mode of flight is said to be ten times more efficient than the helicopter mode during VTOL. That is: for each minute that they can cut from flying like a helicopter during starts and landing, they gain ten minutes of normal flight time. I think the energy argument does not apply that much more than for other small electric aircraft.