fantastic expansion. Tags for armor were intended to be in the base game if i remember correctly, and these feel like such a natural addition to FIST. On top of that they are creative and fun, enough that i've used them in other game systems already. I would not be surprised if we saw something official in the future that pays homage to this.
A layout update with some visuals would be cool, but i am not one to complain about a readable, no nonsense pdf.