After you get the Krivbeknih, you should be met by a brawler or a bruiser, who is non hostile. if you sell the book to obidiah, he goes with him; but you can rehire him. if you destroy the book, he becomes hostile. also, if you keep the book, (or sell it maybe) all swampfolk are non hostile. Example would be this- http://www.nexusmods.com/fallout3/mods/7432/? but with a companion added on.
The forum has been set to read-only mode. For community discussion and questions, head over to our Discord: https://discord.taleoftwowastelands.com