Oh, I'm not saying that it is "wrong" to have a stat double statted. I just think a creator might question if it is necessary.
But since you asked...
Yeah, I wouldn't add Durability to a weapon or gear unless I intended the item to be useful in protecting the character from damage.
As you said Chaosnet, Cap's shield is specifically used for blocking attacks. That makes Durability an integral part of the concept to me.
But something that is mainly meant to be a weapon, I don't see the need for the Durability trait off the top of my head.
To me, it's just a matter of item concept.
If I saw myself parrying with the weapon all the time as a major part of my characer, then maybe that Durability moves back into the power.
It's just a matter of preference and vision.
No right or wrong.
