Is anyone using the Nexus One with T-Mobile's Total Internet Plan? I currently use an iPhone and am interested in trying out a Nexus One. It looks to me that I could order the internet plan with a SIM card for $39 / month and use google voice. I honestly don't use voice nearly as much as data and this type of arrangement would work well for me.

Just wondering if I'm understanding all of this and if anyone has had experience with this type of setup.