I actually went through the effort of replaying BG, getting the Pantaloons, and doing all that was nescessary to get the Big Metal Unit, and Rod.
When you wear it you look like an iron golem, and have similar movement restrictions. But it gives you a HORRIFIC AC, I was playing a fighter/thief, and my AC dropped to like -31 or so. It is fairly savage.
Actually, it was /so/ unbalancing that it was completely un-fun. The rod shoots magic missiles, aganazar's scorching, and some exploding skull ammo. Not the most thrilling weaponry, but with the same armor, I equipped a nice halberd and it was -ugly-.
Fun to do once, but that's really about in my humble opinion.
