I've had AB Ovals on 3 bikes now for 7+ years. I love 'em. They are subtle, "getting used to them" is a matter of less than 1-ride
2-3 areas where I notice their benefits, enough to make me prefer them:
Low Traction, I spinout less in wet/super dry conditions, Right as it starts to peak, the oval backs off the torque and I can maintain steady power without breaking loose.
Powering out of corners, when I'm too lazy to downshift, I can feel the oval giving me some room for error and still power down out of slow turns
Stall Speed, kind of the same thing as the two above. On techie stuff, when stalling results in stopping, I can keep going from almost 0mph more often than a round.