I'm almost two weeks into using the 2030, and it's great. Of course, there are no gestures, but it also costs hundreds less than the TouchStream.
The #1 feature is the straight rows of keys -- not staggered. The TouchStream is the same way, but now you get tactile feedback with it. For the first time in over 14 years of typing I'm touch-typing numbers!
Because of the way the keys are situated, once you get used to the straight rows (about a half-day or so), your hands kind of stay in one place while your fingers kind of swing straight forward and back while typing. It's a natural, comfortable feeling. There is virtually no reaching involved. It's also smaller in surface area than the TouchStream, so I think that reduce finger movement also.
There is an Enter key and Backspace key in the center of the keyboard, between the keys which belong to each hand. It was within the same half-day or so that I got used to using them, and I still reach toward the center on a regular keyboard (when I'm using my iBook unplugged). I think it feels more natural than groping out with the pinky finger.
Of course I got the Dvorak model. ;o)
I've been using it on the Mac and Windows, and you don't need drivers for either one. The main annoyance is, for Mac use, the command key is the "start" key, which is not next to the space bar -- it's a couple of keys further to the left. I'd like to see that become programmable in the future, the way it is in the Happy Hacking keyboard. But other than that, and in spite of it, I think it's the best keyboard out there today.
Here's the site:
By the way, it looks better and feels more solid than it looks from the picture. It's pretty darn nice.