Seidio is currently working on an extended battery that is the same size as the OEM one btw
I've got to go with the first few posters. That thing is hideous and ridiculously over sized... One reason I like this phone is the streamlined design (it's sleek and clean)...
They should have looked into various other methods if that was the desired capacity (i.e. extending over some of the speaker or the back of the phone or something). Hopefully they'll get the slim-extended out before long (though I easily get a full day out of a charge so I'm in no rush).
You are right to be wary. There is much bullcrap. Be wary of me too, because I may be wrong. Make up your own mind after you evaluate all the evidence and the logic. - Mark Rippetoe
Matter of opinion.