slippers or not, sometimes it the behavior,
we can see even nicely dressed promoters during breaks
sitting/squating leg open ... thats a bad promo for their own shop
right?
we can see ppl wear stupid looking apparels, but behaving well
...
so does it matter about slippers?
i met an architect in a club (yes he is a real architect), he wore
a plain T-shirt+berms+slippers. now thats a complete outfit right?
great ! but he behaved like a monkey in the club, harrassing the DJ
for songs, speaking in a funny slang, walking around staring at ppl
as if he is the club owner. he even told the waiter "your sound
system no good" 
he must be a Gongsultant