The new handle really help stabilise walking shots as you now have two grips and can use both arms to soak up the bounce you get even by carefully Ninja walk. Close to the ground shots are way easier and stable since you move the center of gravity way below your hand.
Only downside is poorer accessibility to the screen.
In the perfect world the grip would have included a quick secure unlock feature, so you can swing the arm out of the way, if something needs adjusting.
It is good, just as described. It would be perfect with a smart fast join mechanism