I need to implement a typographic solution, and was about to go the sIFR route, but sIFR 2 is ancient and sIFR 3 doesn't appear to have been worked on in over a year and a half.
I've been looking into the @font-face method, but I'm pretty sure that the fonts I need to use do not allow web embedding.
Truth is, I got bored with development, got busy with other things, and proper web fonts started becoming feasible. At this point I can't see myself going back and improving sIFR, there's just no point to it.
The reason it was never officially completed is that there was still work left to do, albeit not very critical work. However to make r436 official 19 months after the fact would be a bit silly.