Wouldn't this also appear in Days? Though it's not a technical ability, its effect is still there as a default for all weapons. 
If the world was perfect, it wouldn't be 14:29, 26 February 2011 (EST)
I'd say to not put it in, considering that, as you said, it isn't an actual ability. Chitalian8 14:57, 26 February 2011 (EST)