Funny that you mentioned this. I have a friend who is in the retail business, and he told me never judge the book by the cover. I also remember reading from this forum the same message too. IMHO I think you should do whatever you want! Go in if you feel like it! You are the customer after all!!!
xiaoxiao, ITA! Unfortunately, many SA's in luxury retailing don't subscribe to the same philosophy. I have very particular stores in Boston that are my go-to's for shopping - there is one luxury goods store where the SA's are SO rude, I wouldn't dream of giving them my business. They only pay attention to you if you are totally dressed to the nines. Not a good business practice, IMO.