Nope, Pandora doesn't have 2.75G data + GSM voice. (Or, more generically, an ExpressCard/34 socket with a $100 card in it.) This will, if all goes well.

And alas, this is slower. OTOH, it's usable now, and just might be completed before people get their Pandoras. (Probably not, though; I'm too busy, so it'll probably be fully operational, but replete with ty-wraps and baling twine.)