I plan on using the Surface RT for work and play, I do a lot of planning for future projects and using the Surface RT with Microsoft Office installed will help me a great deal with the projects.
I will use it for work. I write a lot of articles daily.. there are a lot of cases that I can write some if only I have the right device like a 5-hour bus ride heading to my hometown or even waiting for the company meeting to start LOL, situations where using my old plug-dependent-6-year-old laptop is not a good idea.