This option is available to 3 martial classes, IIRC. Fighter and Ranger, and some third (maybe Barbarian).
Re: Applying poison - well, that's a problem with the player narrating only misses. You need to have some amount of diversity in your descriptions. Also, completely missing and missing, but doing a small scratch aren't that different from each other, so the player that insists on narrating only misses an have what he ants and still use poisons.