The long and short of it is, it works very well to compensate adverse yaw in an engine failure situation...
In the sim (pleaaase, only in the sim!), toggle on the autopilot at 30ft AGL, shut down the engine, order a coffee and watch it fly!
About the only manipulation you will have to do is to confirm the engine failure in the FMS, and retract the flaps once it has decided to accelerate... It's almost humbling to see how smoothly it centers the ball, and gives you about 4 degrees of opposite bank...
Oh, I forgot: you still have to move the thrust levers back one "click" at safe altitude to signal for max continuous thrust...