Personally, as long as it's not nasty, I don't care what any of the housemates do for a job or what they're like in the real world.
To be honest, I know I'd dislike Gina and Dexter massively in real life (though Dexter would at least be interesting to talk to once). Sallie, Jackie and Daley I wouldn't want to give the time of day to. The rest just aren't the sort of people I would mix with, other than what little I've seen of Sam.
However, what I'm looking at is how much do they interest me as housemates, which is a different kettle of fish...
Gina and Dexter suddenly become great, Callum interesting in a fruit-loop way. Dan and the Twins just wore me down and became very, very irritating too quickly.