good to see more of these stores opening because they are great places to see ALL of the windows phone offerings regardless of carrier and with no hassles from uninformed carrier sales reps. Thankfully in my case the Chicago area store was one of the first ones and thus I was able to take full advantage of it when I went WP shopping last spring (and came home with my DVP).
I hope they can start bringing some unlocked phones in also. We need more selection up here! The carriers don't seem very interested in providing choice (choice does not equal 30 different low end Android phones).