I botted full pvp gear for 2 characters, no whisper, no ban. There will always be some kind of risk, but make sure to configure your class cc as "human" as possible. For example hunters, disable trap use for single targets, no hunter would ever use immolation trap to kill someone in pvp. Same goes for revive pet, seen lots of bot hunters who were under attack and tried to cast the allmighty 10 sec pet res spell...