I fill up my buffer with things I want to tweet, then every day at the specified times, it tweets the top item from that list. It doesn't send twice, and it's easier for me than scheduling every tweet.
So is it a one-to-one tweet/time-slot match? I can see a usefulness of filling up the stream and letting the schedule do its work. But this must be a feature most suitable for marketers etc, no? As a casual sharing, I don't tweet a lot anyway so I guess I have no need for scheduling.
