I'm using it on mine, but it still not good enough. Tons of minor issues that together hamper the experience:
- Connected standby is borked (i think they are making it more like phones), it never sleeps properly, the touch screen and rotation sensors can wake your device even when the cover is closed. And I also had some issues coming back from sleep.
- Random processes eating the cpu up.
- It's nowhere near as fast or fluid as W8.1. Search and start screen management are specially a lot worse performance wise.
- Touch/Pen is weird. Dunno the cause, but sometimes continuous input from touch and pen get interrupted... Like you are scrolling a webpage and a mouse pointer keeps appearing under your finger, and when it does the scroll becomes kinda jerky. With pen the issue is similar, but then you have your hand getting the input and messing up what you are doing.
- Metro apps crashing, constanly
- Some issues with the store, like apps not installing, iaps not working etc.
- Not optimized for touch. Continuum just make everything maximized (but not full screen), and simply moving the surface will make it spam the notification center with about 20 notifications, non touch version for IE, the current action center has less actions for controls, legacy metro apps that relied on the app command bar, or charms are a chore to use.
- The play to charm is gone
- The start screen currently is behind the 8.1
- The wifi options in the settings app is kinda broken, I end up opening the app and then invoke the previous connection side bar to be able to properly connect to a network.
It's still usable, but definitely not recomended, unless you like really needs to test the new stuff as they come