I got my ME Commercial add on at Arlington with him (Glen Evans was my instructor). Robert Riney was the DPE. He's an American Eagle check pilot, and I rate him as tough but fair. He did not skip a single Task, but I had studied pretty hard and aced the oral. That set me up pretty well for the flight. Since it was about 120 dF on the ramp, we both wanted the ride to be over ASAP, but he made me do everything required.
While I was there, there was a female student doing an initial ME with him.