Users are working exactly as if they are on a normal local checkout version
the sharing is made only on non modified files
for a modified file (which has turned to a local copy instead of a shadow
symlink) the commit works as usual.
(the CVS files are of course always local )
I don't see the point...
Of course you have to take care that the base is not updated randomly. A good
practice is an update of the base at fixed dates (one each week?) for users to
know that they have to resync their shadow links.
Olivier