@xdesoto
Usually, at least I have, people have both their main and away nickname grouped so there is no need to re-identify. Although if you don't have them grouped you might want to add it. I added the suggestion to the description. Thanks for pointing it out.
@ProSec
Oh I completely forgot about an if (!$away) check at /afk. Thanks for the tips ;)
Added a check on /afk and an error message on both aliases.