OK, thanks.  Now we're getting somewhere.  I guess I just mention
hardware availability because I got the impression that while you
could run everything from a single PC with fossil (by "run everything"
I mean have it handle auth/cpu/fs), Ken's fs was designed to be run on
a machine that acts as a file server and nothing else, though I'm
guessing now that nothing would prevent me from using Ken's on a
multipurpose machine.  In any case, you're right the hardware stuff is
a red herring, so allow me to rephrase a bit more concisely.

In Plan 9 you can use fossil, kfs or Ken's fs, which do you choose and
why?

Greg