Windows RT install size

Hey everybody, I'm trying to determine whether I want to get the 32 or 64 gb version. I think i've settled on the 64 for the convenience of not having to worry about space. However, I know some other people who are getting one and would like to know which to recommend. So does anyone know how much space Windows RT takes on a new install? Specifically, how much space would be left over on a 32gb model? In the requirements for Windows RT MSFT requires at least 10 gb of space after the OS install. So I'm thinking its around there, but I would like to know specifically.

Anyone who's gotten to play with RT have this information?