meh - I don't see this as useful unless they are introducing folding like the Yoga, because you're essentially telling the computer you want to change the way you interact with it, and really I only see this being useful when I have a pen. It's like the one thing I miss when I'm lugging around my laptop - taking scribble notes with easy diagramming.

But I only say this because I need to access corporate data when I'm in meetings and my company only issues me a laptop (because I'm a dev) and not an iPad. And I'm not bringing my own tech to work.