Well, i got one today (for work, to evaluate and learn to support), initial impressions (coming from a reasonably happy N95 user):
the good
- interface = 2 thumbs up from me. its cool. i also like the fact that i have a qwerty keyboard on screen to pick at
- GPS = superior to N95. it works indoors, at least somewhat (not as accurate due to less satellites contactable from inside no doubt, but it actually located me)
- exchange sync = awesome. mail is quite readable, and again.. qwerty keyboard

- battery life seems half decent so far
- charges via usb =

(nokia don't). this is good for travelling, because if you've only got one universal power adapter on you, its one less thing to juggle for a power socket against your laptop or whatever else
- contacts integrated from exchange sync =

- it can connect to PPTP, L2TP or IPSEC VPNs
- for all the eyecandy, etc - the interface remains pretty quick. the early n95, n80, and various other nokia phones running symbian are hit and miss. some models are slow, some are OK. the N95 i had was fine after it came back from repairs, maybe a firmware update fixed it...
the bad
- telstra require you to use a different APN for internet. had to get that added to my SIM. had no documentation to that effect, but figured it out from the net, etc then rang up telstra and no probs.
- not sure if it has voice navigation yet. maybe its an app i can download
- can't assign MP3s as ring tones. bugger.
- there's no really decent tone for an alarm that will wake me up. they're all too... hmm... soft noise style sounds.
- i have it connected to my home wifi. however i have no idea if its using this, or my nextG for internet right now? can't figure out how to tell...
the ugly
- fingerprints = :| of course this is always going to happen with a touch screen, but because its the shiny reflective style, it shows bad.
overall
for all the hype, it is actually quite decent to use. the big ones for me are the exchange push style sync, the onscreen keyboard, and its general integration with the global addressbook/contacts from exchange.
Yes the nokia did most of that stuff (sync wasn't push style tho, continuous polling), but the iphone does it better.
Its a much more useful business phone than I expected.
Of course, if you don't have an up to date exchange environment for your business, its just a glorified ipod really
