Items on Valkyries and Shadows?

I was fooling around with Maphack today with the option to look at other people's equipment and I clicked on a Valkyrie, map hack was telling me that the valkyrie was using a spear, and armors, I then later tried to do it with my assassin's shadow and it did the same thing. I was wondering if anyone else noticed this, and if it was possible to exploit this.