It works really well, I have not heard of any bans since I started in early February. But there is always a risk when botting if you get people that go out of their way to follow and report you.
We just Necro'd a thread in Support I think it was, with multiple posts about this same question, you can go find it and take a look
https://www.thebuddyforum.com/rebornbuddy-forum/rebornbuddy-support/146587-banned-received-warning.html
Seems kagepande is the master of botting multi characters 24/7 and has not received even a warning correct? lol
It depends on how you run your bots, many factors go into it and the amount of work needed, if you make them quick and just let them bot from day 1 and never watch, youll get banned. But I play my bots by hand quiet often during the leveling periods and such. You server will also depend how much you are reported and etc.