As of lately, the bans are kind of wishy washy. It seems the bans are being done manually by "Mod Reach" via people reporting them.
More than likely you get perm banned, yes, with some people getting 3 days bans depending on what you did.
I would say just to babysit the bots and do not run them for too long. Because they opened F2P until January 1st, they are watching more carefully for the bots. Just be safe