@frankm ChromeOS isn't quite there yet but it's improving quickly.
Android apps are still a little bit too isolated from the rest of the system and Linux apps are still on the unstable side.
But, even though I've been very annoyed at ChromeOS in the past, it's just a matter of time before the OS is a fully-fledge, fully capable general purpose computing platform.
And I think there's a decent chance that ChromeOS and the Pixel Slate will get there before iPad Pro+iOS does.