Bugs Everywhere: a distributed bug-tracker

Wondering if bug tracking could be distributed and integrated with VCS, I just ran into this (bugs-everywhere), a LWN article, a few blog posts, but no discussion on a social news site. Hence my first posting on HN...

It seems an ideal solution: bugs lie with the source, and the "social part" is left to the VCS workflow and the (web) interface.

Do people have practical experience and feed back with this kind of tools ?

PS. After a few moments looking at bugs-everywhere with mercurial, I found it would gain much from a plugin integrating it in the 'hg serve' interface.