Redcarmoose
Headphoneus Supremus
The OP's story here reminds me a bit of a time when I was in Vegas - shopping mid morning and went into the Versace store at Caesars Palace http://youtu.be/yv89Lb7mwQE (not my video, but gives you an idea of how highbrow a store it is).
I was just mooching around looking at their rags when I noticed one of the male staff staring at me in a snobby displeased way, so I just ignored him - couldn't think of any reason why he'd be like that with me, but noticed he kept this up following me with his glare around the store.
It wasn't till later in the day when I mentioned this to a friend that they said it was probably due to the fact that I was wearing Armani and dude didn't approve of me wearing a rival designers clothes in their store - like What?
If you go into a non specific store that sells a host of brands, you get a warm reception, but this dude in Versace was as uninviting as it gets - though he didn't throw me out like OP was at SE - lol
Snobby sales staff are everywhere, OP should laugh at SE's loss not his.
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I used to sell motorhomes. One day a guy came walking in wearing a very strange shirt and pants set-up. One pant-leg made out of a green piece of cloth, one out of red cloth. One shirt-sleeve made out of yellow cloth and so on. Almost like what a clown would wear but more like normal shirts and pants. He purchased a $75,000 motor home in 15 minutes. The getup was a deterrent for only the best salesman.