Thanks for the heads-up, kabert. I went to both the Connecticut Avenue and Mazza Gallerie locations last night. As expected, the selection at Connecticut Avenue is much better -- there were several racks of shirts, sweaters, jackets, and pants. For shirts, mostly Barney's label, but I saw some Battistoni, Etro, and one Kiton (size 17). For sweaters, mostly Co-op label, but I spotted a few Malos and Colombos as well. For jackets, a mixture of lower end (Barney's label, Hugo, Michael Kors, Hickey Freeman) and interesting designer and higher-end pieces (Turist, Jil Sander, Dries Van Noten, Martin Margiela, Issey Miyake, Bogioli). I didn't take a close look at the pants and there were no shoes.
It's probably worth a visit.