Three of my mates have them and one is selling is after only having it for two weeks.
If you want a phone that looks nice then this is ideal, but feature wise there's nothing special on it.
I had a play with it and it's definatel a pretty cool looking phone and the software itself seems ok too, but it's not my kind of phone. This one's more for the people that like fashionable phones instead of gadgety phones (ok, so I like gadgety phones, I'm not a geek honestly!

).
The mate that's selling it says it's not what he hoped for. He likes the looks of it, but says the rest of the phone is dissapointing to him. The other two mates with them love them though, so I guess it's down to what you look for with a mobile.
It also seems that they only have polyphonic ring tones, not real ringtones (unless I missed that option) which is a bit of a let down for me, but some people are happy with these.
I think this will be one of those phones that's sought after while a new release (they are going for around £300 second hand at moment), but will then blend in as normal mobiles. Remember the Motorola Startac? ( I had one ) they were excellent when released, mainly because of the shape and size, but again they had nothing special in the features again. They were all the rage for so long and then faded away. (having said that, most phones do this at some point)