This gallery is a friendly place where lonely individuals wander in and then tend to linger - striking up conversations with one of the gallery owners. Conversations tend to go/get long, and perceptive visitors start to sense a rising tension in whichever owner they are talking with/to. It's a difficult dance gallery owners (and visitors, for that matter) have - on the one hand you want to be friendly, but on the other, you need to not spend too much time with one person.
For the rental galleries in particular, it's difficult for the owner, since they're never sure which of the people they're talking to might be future customers - wanting to rent the space for a week-long exhibition.
On the dealer end of the spectrum (not this gallery!), they tend to be Very Blunt and even seem to enjoy being Very Rude - a snobbery thing I suppose - like a tip-hungry food server licking the shoes of customers they expect to pay them a large tip, and basically spitting on customers they judge to not be high tippers (Yeah, you got that right - I'm not a big fan of snobby galleries or restaurants - in fact, I think the tipping system in restaurants in most countries is downright evil).