One of my best friends is an ESTP. She is very blunt and straightforward and doesn't care what anyone thinks of her. She knows she comes off as a bitch and and she says it out loud she says 'I'm a bitch. If someone has a problem with that, they don't have to hang around me.' She's really sweet to me though, but still blunt. I think she is particular about the people she is a bitch too... because I've seen her act as sweet as she is with me with others as well. Though she is a total bitch to children, she hates them. I think they are creepy too, most of them. So, she is a bitch with a soft sweet caramel center, sprinkled with thumbtacks... and I love her for all of it.
So no, I don't think she is evil.