I work at a Casino here in Australia and I work in the VIP and VVIP sections. I never used to wear my rep AP ROO Diver (super rep) because most of the people that are in the salons that I deal in would know that it's an expensive watch or even my super rep Panerai 299 which are the only 2 rep watches I have. I normally only wear my ceramic armani watch that my mum bough for me as a birthday present. That being said, I see ALOT of people at my work wearing rep watches, I'm walking about the players here, people betting 1k-10k per hand (on baccarat). That is when I am in the VIP main floor area and Ive seen Quartz Hublot's and rollies. but by far the worst I saw was one woman that was wearing a rep Nautilus (it was Quartz) and she was betting 50k-100k per hand.
That being said, I've seen my share of gen watches too, lots of rolex's a few AP's Hublot's, PP's and even saw a Richard Mille once. and see a lot of Tourbillon's but don't know what brand they are. I think the nicest watch I've seen is a Hublot Big Bang Classic. just had hours, mins, seconds. black dial face with silver hour marking, the bezel was rose gold and the case was silver with a black rubber strap, I really want to find a super rep of that. my favourite watch so far, I see that patron often and he's always wearing it, it goes with a suit nicely but can also be worn casually, I love it.