I'd be in for this provided the database could be encrypted and files could be synced or at least copied between Win and Nokia.
RTF would be good enough for me too.
As a sideline, people may hate MS Office but it's a fact of business life and that won't change in a hurry. A well chosen subset of MS functions is all that's necessary for the IT. I use Open Office and find that just as bloated as Office for my purposes (I stress, MY purposes).