So far I've got 99 hp on three of my stakers without bans. Using AutoSoulWars Pro for about 10-24 hours/day until I have enough zeals on any of the account. So yeah I'd say it's very low but I might have been lucky.
Il put it this way. I botted soul wars 24/7 from 65-99 range...no ban and its been 30 days after the accomplishment. Theres just too many bots in soul wars and to many people.