In my usual manic fashion, I have dropped Twidroid for a bit to retry Seesmic. I couldn't use Seesmic before because it would not recall my position in the timeline; it now does. That said, Twidroid will occasionally lose its place when I switch back in.
I'd still rather have a control in Seesmic to post a tweet without having to press Menu.
Swift is also a good app, but I don't love the way it looks. I hate the way Tweetcaster looks. I've been using PCs for a long time, and it reminds me of the old DOS 2.x days when people learned how to use Esc codes to change colors of the DOS prompt, with blinking cyan text on a magenta background. Just because you can, it doesn't mean that you should. I think that the Tweetcaster guys should buy themselves an iPhone or a Mac, take a look at Tweetie, and start from there, but don't go too far further. (Really, all of them should.)
We'll see how long I stay with Seesmic. I'll give it the weekend at least.