Fair enough with respect to NDAs in your case, but they don't really apply in mine. As for it missing features of a fully-fledged DVCS, meh. What you're talking about is basically a glorified TODO list, which in most cases you'll be the only one updating. Furthermore, you'll usually be updating it from one place at a time. On the rare occasions I get a conflict, it's usually a simple matter to resolve. I do use Mercurial for managing other stuff like environment configs and program settings though.