When we were using savact on production I wanted the *lib because of the
possibilities you pointed out below. Management deemed this unacceptable
because you still have to kick the users out until the sync point is
achieved. Just letting you know that in case you decide to try *lib,
which, based on your test requirements, and your understanding of the
ramifications, I don't think you need.
Now we use Mimix and back up off of the dr machine.