It looks cute, but I don't think it's ridable over any significant distance. There's a reason high wheels had, um, high wheels, not small ones.
I had the chance to ride one when i volunteered for a town fair and a club for them rolled in right before my shift, they noticed I was riding fixed and offered/ dared me to take a trade and ride one of their "fixies"; end of story, I enjoyed it quite a bit, the novelty of riding one is just awesome and a must for any bike rider. Going back to roots!
I rode a mini P-farthing at a bike party here; it was really hard to get used to but it's super fun.
I like the look of their Roadster. It seems really cheap at $230.
I really want one, my friend commutes on his unicycle thats about that size, this can't be too bad.