Originally Posted by 172_driver
By the way, is it possible to tell if the initial roll will be right or left?
Yes.
What matters, for the case you postulate - disturbance in sideslip - is the dihedral effect, because that will immediately cause the aircraft to roll in response to the sideslip. The roll due to yaw rate won't have a chance to have an effect until the plane begins to yaw in response to the sideslip, and even then may well be less significant than the dihedral effect.
Cl-beta is almost always negative, which means I'd expect a left roll for a right sideslip disturbance.