Hi Pilou, yup being able to set up that loop selection on a keyboard shortcut is one of the new things in v2, it looks like you found the script for it already.

There are some details on it in these posts:
http://moi3d.com/forum/index.php?webtag=MOI&msg=3112.22
http://moi3d.com/forum/index.php?webtag=MOI&msg=3112.32

- Michael