I have the older model ice cream maker for KitchenAid units, and that works just fine, but this new, improved model improves on several things!
First, the textured outside makes the bowl a lot less slippery when frozen.  Also, the gray color of the dasher is a nice contrast from the previous white color, which makes it easier to evaluate the thickness of the base as it churns, since you can see a little gray when first freezing and the base mixture is not yet frozen, to completely opaque when frozen.  Super fun accessory for a KitchenAid.  I recommend trying fresh mint ice cream!