Haptic touch screens

I’ve been looking at some of the haptic technology over on the http://www.immersion.com/ site.

Has anyone ever used one of these tactile touch screens or had much experience designing a product which take advantage of this technology?

yeah that verizon touch screen phone the Voyager. The experience is pretty cool, but I hear it drains the phone’s battery a little bit faster than its worth to have it enabled.