It looks pretty good, but what is the motivation for switching search infrastructure (out of curiosity)? If it's to integrate searching across m.o assets then I'd say this is perfect. If it's anything to do with MW search sucking ,then that's a different story.

I'm asking because, with the MediaWiki we have at work we thought search sucked but then realised that it simply wasn't set up to index words with IIRC 3 characters or less (mysql fulltext indexing, I think). Realising that I tried searching for stuff with len>3 and thought it actually worked quite well.

Also, it's missing maemo.gitorious.org; probably too early for anything coherent from transifex...