I can easily add it, once I get around to it

(I'm focusing on Vampirism, and a smaller side project, at the moment)-- I'll see if I can't release it in a few hours

Done.
New Version (1.2) is up-- contains only the Shift At Will upgrade, given automatically at Stage Five Lycanthropy.
Link : http://www.tesnexus.com/downloads/file.php?id=27938
As to voices/sounds, not sure yet-- off the top of my head, I don't know how to do it (probably a really simple way, of course, but...) so I'll look into it when if I get a chance.
As to weapons, you shouldn't be able to hold a weapon before Stage Five anyway-- if things are working correctly, and you have the right OBSE version, they should de-equip when you attempt to use them.