it is FAR more than a toy... at 4k AUD it is a very serious piece of kit indeed.
It's usfull because it feels a lot more like using pen on paper and thus if far more natural. If it it feels more natural then the artist will perform better and quicker.
It can also rotate 180 degrees in both ditections (you can spin it up-side down in both directions.
Currently it is state of the art.and it will only be Wacom's next model that stands a chance of superceding it. though I get the feeling that the 21UX will remain at the top of the pile for a while yet