HTC EVO 4G Fuel Lite - Battery Extender Case

Any idea how much thickness this will add to the phone?

I think an extra 850 mA is plenty of extra juice. The thickness is the only thing that worries me.

P.S. I still voted for all of those that want this case. And me in case I decide to get one.
 
They currently only have this case for the Iphone and Blackberry. I like how they only show the dimensions for the Blackberry case and not the Iphone though, odd...
 
I would buy a couple of these if they come out for the EVO. Great idea. The barely there case looks good as well.
 
voted :) Always wanted one of these when I had a Pre hopefully the EVO will have one now that I'll have one today.