re: Loop selection - the script you put on a keyboard shortcut for that is:

script:/*Loop selection*/moi.geometryDatabase.selectLoop();

and some more examples for how it works:
http://moi3d.com/forum/index.php?webtag=MOI&msg=3112.22
http://moi3d.com/forum/index.php?webtag=MOI&msg=3112.32

- Michael