The triangular grip actually makes a difference during long writing sessions, my fingers don't cramp up like they do with round barrels. It's nice knowing I can just refill it instead of tossing the whole thing, and the grass texture is a small detail I keep noticing.
I've never had a pen where the material felt this nice in hand — that meadow grass grip has a slightly textured, natural feel I keep noticing during long writing sessions. Being able to refill it instead of tossing another plastic pen is a nice bonus too.