I think if they have reasonable cause to believe that you've been playing legit for a decent amount of time then you won't get a straight ban. A lot of times you'll read on the forums that someone's main would be 2-day banned, but you don't really read about how someone's bot mule has been 2 day banned. I've had about 7 accounts so far, some f2p and some p2p get permanently banned straight within a week of using perfect fisher. My most recent account, a defense pure account, used a monk script to not go afk on while kicking a monk, and then used perfect fisher to bot maybe 2-3 hours at for a total of 3 times. It was perm banned in exactly 7 days.