alt Hacker NewsIt appears to be usable for daily use for some people, in that enough of a web browser works that you could mostly get by. It would be hard to say it is really practical, nor that it has a convincing path to being practical in the way that say ReactOS does.
People still find plan9 usable for daily use. The major barrier these days is indeed a web browser. I suspect even there you can get 95% of the way to that goal with a "browser" that is actually a linux VM.