As a creative, I just don't get the hype. I tested one out at the Microsoft store and found it nice but lackluster for actual creative work when compared to Wacom Cintiqs (which is what Microsoft is really competing against at this price point). The biggest issue I had was the lack of customizable buttons on the bezel. Those are immensely useful for streaming workflow and the puck thing is no replacement as, at least at this point, it cannot be user customized (and it is nowhere near as easy to use as simply pressing a button). I also missed the matte screen that my cintiq has, which cut down the inevitable reflections that will show when you've got the screen pointed towards the ceiling while drawing. The pen wasn't as sensitive at Wacom's either, though it was nice enough to use.
Probably one of the most significant issues that the Studio has that most creatives would complain about is the inability to mount the thing on an adjustable arm. If Microsoft had put the computer internals in the display like Apple does with the iMac, the problem would be solved. Maybe they'll fix this on the Studio 2.0.
Oh, and the price is kinda absurd. It makes far more sense to buy a $2,800 Cintiq display and build a $1,400 computer than buy the fully loaded Studio at $4,200. That computer would run circles around the Studio performance-wise and is fully upgradable.
All in all, the Studio is nice. I just wish people would quit saying it's for creatives. Maybe hobbyists who don't do their research would buy it, but I guarantee actual pros would largely balk at the idea of buying one over a much more flexible Cintiq.