The local coffee house just started carrying these, and if I hadn't just sent out a rent check I'd pick one up. That's easily the prettiest press I have ever seen. They've also got Highwave MoJOEmo mugs now too. I've got a standard Joemo and a larger one with a tea basket, and they are indeed fully leak-proof. The only downside is if you are one of those heathens that add sugar and cream to your coffee the seal mechanism can get pretty gross.
I've actually been rocking a Nissan Thermos that's just as leak proof, quite a bit simpler, and so effective that I've burned my tongue up to four hours after putting coffee in it. I've lamented that it works too well.