Yeah the address book doesn't mean much unfortuately
WHEN this phone is first released with US 3G, it'll be in the GSM flavor. Give it another few months after and MAYBE they'll have a CDMA version (and sprint may or may not get it still), but that time is quite far away.. I'm just gonna get a Hero in the meantime to tide me along, no sense holding out for an HD2 for that long when it's such a long shot.
One thing is for sure though, when the HD2 is out, I'm switching immediately to whichever carrier gets it and pay full price on day 1.