I'm still testing it out but it feels a lot less like a phone with a bigger screen that I thought it would. I mean that really depends on the apps more than the OS. I was concerned that the tablet would be kinda an after thought vs. the phone experience. So far I don't see that.
I haven't found a big use for mouse and keyboard on tablets but when I test that stuff I will share for sure. I was thinking of testing that last night but didn't have time.