Seems like a pretty decent upgrade in certain contexts. Reduces cost to zero and if you attach this to SttP it prevents the card from sitting dead if you already drew the weapons you needed in your opening hand by helping your other fighting investigator friends find what they need.
For 2 XP I do wish instead of the cost being reduced it was either fast or searched 12, then I think it'd feel like more of an across the board upgrade and would see play outside of larger multiplayer campaigns or traditional 1 cluever 1 fighter investigator groups.