I checked it and honestly I am not impressed:
First, and this is just a matter of personal preferences, I felt it was too big. This in spite the fact I own a HD2 and a HD7.
Second, and this is more a fact that a personal impression, the OS limited resolution makes the UI looks odd on such a big screen.
I decided to pass on it and wait for the Samsung Focus S or whatever it will be called the SIM free version of the device.