I purchased two watches there last year after visiting almost every watch shop in Las Vegas. I was looking an IWC pilot chrono, every other store had just sold theirs or it wasn't interested in selling watches.
I spent about 45 mins in the Tourneau store almost directly across from Roman Times. Despite there being about 20 salesmen in the the store no one approached me or offered to show me any watches. I was looking forward to checking out Tourneau because of their size and impressive selection. I left feeling a bit disgusted then I ran across Roman Times.
Roman TImes is much smaller but has a nice selection and the staff is very knowledgeable and ready to sell watches. I found the IWC I was looking for and found a Baume and Mercier for my wife and we got right down to making a deal that I couldn't' pass up.
I'll be back the next time I'm in Las Vegas. Highly recommended!