Can also drop a Stave of Shielding. The Veteran who had the stave also enraged at the end of the fight and i'm sure that's the only time i ever saw one of these enrage.
This, along with A Scarred Overseer, is a PH for Overseer Dal'Guur. I haven't kept as close of tab on drops from him, but he does drop a Leather Whip every time, and I'm pretty sure I've seen him drop a gem once (in perhaps 20-30 kills or more).