I went to Las Vegas with a few friends and made an effort to scout out some watch stores and oogle. The first I went to was Tourneau, which was easily the coolest. They had lots of "booths", each isolated from the others. Patek Philippe, Vacheron, Jaeger Lecoultre, and many others were represented. I was very happy to see a small booth for Nomos. I tried on the watch next to black-dialed one. It fit much better than I thought! Tourneau also had a large used watch section with a gorgeous moonphase calendar Universal Geneve. Of course, all of their watches were priced about twice what they'd go for on an Ebay auction - but I wasn't there to buy. I might add that the employees there were really great. No pressure at all. You come to them, they don't come to you unless you've been oogling at a booth for a long time. And they're very nice.
Is that one the new 38mm Orion? (or the 35mm?) My wrists are slim too and I was wondering if the 38mm fit well or was too big. I've tried the 35mm and it's just a tad smallish.
Vegas is great for window shopping. I agree about Tourneau, staff are really friendly, the inventory is amazing. I was just there a week ago. Just across from Tourneau is Roman Times, good selection of Zenith, IWC, Hublot, and others. Again, friendly staff, don't mind you drooling on the counter-tops. Bellagio has an Omega Boutique as well.