Yes I own one.
4-5 months now.
I like it, but provisionally:
If I'm around the house and need to print or access stuff on my network, the Duo shines.
If I'm on the road and simply need to consume media and online content my Android tablet blows it away for weight, ease of use and battery life. Period.
I loved my Duo at first, but having a good running Android Tablet to compare it to has been a real learning experience.
Windows touch interface DOES tend to be a bit clunky to use, and that's after tweaking settings and installing Origami and Flicks.
There is also no work around for the weight and battery life issues with the Duo, and they are the key flaws that keep mine from being a constant companion or daily driver, even with the Audio dock thingie on my desk.