Twin-Rotor Platform Constraints

Hello,

I have read through a lot of discussions and other material regarding Twin-Rotor designs, but remain unclear on how ArduPilot handles these configurations. Just briefly:

Is ArduPilot able to support a tandem rotor configuration that does not utilize a swash plate for control at this time, or will it require modification to the bicopter mixers? Yaw/Roll/Pitch would be controlled via rotor tilt and thrust differentials. In this case the pitch of the entire rotor assembly is tilting perpendicular to the forward axis, there is no collective/cyclic pitch control.

I see some discussion in threads that are several years old, but nothing conclusive.

Thank you