I've tried the following:
and they are all terrible. They contain much too much crap, they all want me to register with THEIR service (I need more accounts like I need a hole in the head), but worst of all, they don't allow me a single-column view of both Facebook and Twitter. Arguably the best feature of TweetDeck/TweakDeck. Also, they all have ads, and they're all annoying.
I honestly don't know what to do. I've been searching for a client ever since the original announcement, but I haven't been able to find anything. At this point I'm considering just writing my own. I'm not going to say "how hard can it be?", but as a software developer by trade, it's not just idle speculation. I think the hardest would be getting the Twitter and Facebook APIs in line. No ads, no registration, no bull****.
Edited to add: Mind you I don't *want* to have to do this, so any suggestions would be preferable.