This is a brilliant little AddOn, but it has one serious flaw. That is that by default toggling the 'Hide Helmet' setting ON or OFF causes your character to sheath their weapon. So, if you have this AddOn enabled and initiate a combat using any sort of attack move such as 'Critical Charge', what happens is that you unsheath your weapon, charge into contact and then this AddOn toggles 'Hide Helmet' and you characters goes into dork mode and sheaths their weapon.

It just means you have to unsheath it again, before you can follow through with your attack, but it's annoying. But I'm not sure how to avoid it as it seems to be a feature of the way hide helmet has been coded rather than something the mod author has done.