It is amusing watching NPCs get confused when Jesse H, as Kainen in a golem goes from saying "got it, got it, got it" as a carrier affects his armor to "no effect, no effect" once it gets to body.
On the question of the life carrier, if you are lying on the ground dead, and someone hits you with a life carrier, does it affect you? I know the wording of the rule is that PCs can't be healed by a weapon carrier, but it's technically Gift, not healing. I say it doesn't, that the intent of the rule is that weapon carriers can't be beneficial, Mike says that it's just whatever heals the person doesn't affect them.