Chalkboard Fabric

I am extremely curious about this "chalkboard" fabric from Denver Fabrics. How well does it erase? Is it washable? How flexible is it? How many things can I think of to make out of it? Swatches are only a penny, and I do have a birthday coming up...
UPDATE: I got myself the swatch...and six yards of oilcloth...and some other swatches. Happy birthday, me!