titan weapons, stealth and CCE

[imric]

When I activate cloak of darkness, my weapon is concealed, and stays concealed even when used (unlike other objects like blackwand, nemesis staff...) - however, if I do a CCE to change costumes while stealthed, the weapon will be revealed (when used) as expected from that time until I am forced to re-establish stealth.  This does not seem to work when the costumes are substantially identical (rats!).