What would one write to identify whether or not something was equiped in a specific slot?

For example, I know how to check for specific items but an NPC commenting that the player isn't wearing a helmet or any armour would be done differently I fathom. Have been browsing briefly but no succes yet.

The triggers HasItemEquiped and HasItemEquipedReal might help.

Doesn't that work with specific item codes though? That's the only instances I've seen it used and used it myself.

I don't think there is a trigger for general checks, such as HasArmourEquipped. There is a HasWeaponEquiped though.

There is a solution, but since WeiDU doesn't support it (beyond many other things), it remains a theoretical solution for widespread use.