Call me ignorant, but with a fast-loading website, I don't see the need for desktop Twitter clients. I update my status probably a couple times a day and I don't find it too difficult to update it quickly. My current setup:
- Rocketdock with a Twitter icon
- Google Chrome application shortcut, saved password
It works beautifully. One click access and I can update my status quickly... why TweetDeck? I might start using this gadget though.