Interesting, never heard of it.. but since it isn't properly accessible from Windows and requires unix I would never run it. Though if you are a un*x-only shop then it could be wonderful.
Microsoft has made their Windows-NFS client freely downloadable as of Jan this year - so the only thing (theoretically) needed to get full checkin/checkout access on windows is to recompile / port the checkin/checkout binaries (it's open-source on SF.net).
In practice, I'm one of those who'd rather run a mile than compile any C++ code these days (too many bad memories, too much pain everytime I recompile a linux kernel, which is the only regular C++ compilation I do these days). So I understand your POV. Although...it's rather sad that the world's best free SCM doesn't have windows binaries because no-one's ever bothered tyring this
NB: the original and main developers are chip-designers at Intel etc, where they simply don't use Windows for development - hence they've never tried porting it.
If only Subversion was written in pure java and could be started with "java -jar subversionServer.jar"
Wish ditto for Vesta. But I'm not about to singlehandedly try to convert an enterprise-level SCM from C++ to Java (!).
From all the people I've spoken to in commercial games studios, SV seems to be the best bit for "I wouldn't touch unix even if you paid me" shops. I've bitched with a number of people who I know well enough to trust their opinions, and seen them go through CVS (argh!), PerForce (everyone likes it, no-one can afford it), SV and a couple of others. Where price is no concern (i.e. at the really big places) there seems no reason not to use PF (although when we last used it 90% of the admin tools had no GUI!); for those that have to worry about costs, SV keeps getting the thumbs up. Haven't met anyone yet who's given up on SV...although I am trying to convert a few to Vesta. I know some who are very obviously tempted...
Oh, and there's AlienBrain. But I won't repeat the words usually used to describe that (don't want to risk accusations of libel).