No the answer, but newly released AIR SDK Version 51.1.3.1 does acutally contain a note/reference to this:
AIR Android support for middle and right mouse button clicks
Applies to: Android runtime component
Description:
For running Android on devices that support a physical mouse, this change ensures that the MouseEvent.MIDDLE_CLICK and MouseEvent.RIGHT_CLICK events are sent to a listener.
Based on that, I would assume that it will just work like you would expect with MouseEvents; unsure about Keyboard though