Kinda dumb question about ship name(s)

So I'm aware that popular Lute ship names include "spear" somewhere in it, I.E. Adam X Lute = GuitarSpear. It's all well and good, just one question. Why is Lute "spear" in the ship names when Lute has never once used a spear? She uses a sword all the time, so it wouldn't be that hard swap "spear" for "sword" in ship names. Just left very confused by this mix up, especially considering it's Vaggie who uses a spear all the time.