cballou/MongoSession — pull request #9 by UnSleep (2013-03-01 12:37:38+00:00)
Title: Update MongoSession.php

With this you can use the created conecction into your script...

$db === $session->_mongo();
$collection = $db->MyCollection;

you can also change the database with _connection but i dont know if that could break everything

now im going to try to open it before the session and handle the previusly opened connection with your suggestions ;)