it's not for me.. the iphone is Laura's now.
a little follow-up:
i found something what looks like smsd page
http://amrut.joshi.googlepages.com/i even found a version (0.2.3beta1) which supposed to work with 1.1.4 fw i got. i does but is rather unstable.
so i tried weTool (installed it via cydia installer, which uses apt-get/deb repos; pretty cool but so far has failed to upgrade itself successfully). From the first looks wetool looks and feels great, should do a good job as a side-kick for the stock app.
i still have to find a way to disable the annoying T9/self learning dictionary.. it's great at catching typos in english but suffers with Lithuanian words having 10s of different endings..