It appears as if you create an appointment in the Unite calendar, it will sync to the BlackBerry and vice versa. There are 2 points about this though:
1) Contacts created on the BlackBerry will not sync to the Unite contacts. Any contacts created in the Unite console will go to every blackberry activated. It seems to assume that if you create a contact on your BB, you want to keep it private.
2) It does not sync to Outlook, so your work (bes or non bes, doesnt matter) is not effected and you will have 2 separate calendars in your handheld.
Without HH OS 4.3 (and a Unite server) ;), these are educated guesses.
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Gadget Canada