There comes a point where there's weapons rarer and weaker than a regular power-weapon, yet apparently just as vulnerable as normal primitives.
Is there a point to having so many inferior yet rarer options? Does anybody take extremely rare things that lack a power-field, knowing they're one power-dagger parry from having to shell out for new ones? You can always decide to try and dodge on your end, but what about quickdraw-capable melee duelists, or weapons you had no way of knowing would destroy it? Any experiences in the matter?
Looking at it, all I can think is that they're meant to stick at least a minor minimal daemon in there, like a small-puppy of Khorne, before you ever use them.