I need to do a continuous mirroring from the vss to mercurial since the
other team will not stop using vss. Do you know if with this approach I
can easily do that? The process will be a little complicate, importing
to svn and then to hg.
Sorry I have no solution for this. Implementing a VSS bridge is really complicated given that VSS model is as weak as the CVS one and its API is brittle at best. I know you are not looking for this answer, but if you intend to spend some energy in this project, I advise you to use it to convince them to switch to subversion first.