Rapier: Curse of Porcelain Fist! (double damage received)

I searched for hours for a specific penalty to no avail. All I found was a general statement of “increased damage”.

So I allowed a Horned Skag to ram me. While holding my Rapier, the skag hit me consistently for 1440 damage per melee attack. While holding a white-rarity rifle, the skag hit me for 720 damage consistently.

So there you have it. The Rapier’s bayonet inflicts triple melee damage, as we all know, but makes the wielder twice as vulnerable to melee attacks.