I, too, don't see Honedge evolving. As for Chespin, I agree with grass/rock as well. I could see Grass/Rock, Water/Flying and Fire. Maybe Fire/Psychic or some sub-type, but I wouldn't be surprised if one of them kept a mono typing. lolol just realized, with the typings i proposed, Fire/Fighting would make sense. Like an overkill trio, grass and rock beats water and flying. Water and flying beats fire and fighting, and fire and fighting beats grass and rock.