This is flown only with a rotational rate stabilization on each axis.
No flicking switches for flying inverted.
No flicking switches for automation like self leveling, gps/baro position hold.
Attitude is controlled directly by the pilot.
Switches are only for different RPM's (motor off, 1200/1500/1800 (example)) and sensitivity of the sticks.
How do I know? I fly model helicopters like these as well, no as good as this guy though...
Tim