Michael (and Pete) - we're planning on bringing perspectives to the phone; just haven't had a chance to do so yet. I have the same urge for total separation, but perspectives work pretty will once you get used to it.
(And I must confess, every once in a while, I do need to see the data in one location while at the other. When that happens, I'm glad I have it around.)
Side note to Pete: you may want to take a look at
this thread about syncing via dropbox. Ken's posts contain some very important information.