Botting PvP can be VERY dangerous.. having said that, if you are smart about it, it's completely safe. For example, I bot every time I do a BG - however I only have the bot do my ability rotations (CAs, Heals, buffs etc). I still handle all the movement. And I ONLY play 1 character in a BG. Being smart about it, like this, I would say I am 99.9% safe while I bot in BG.