Just to say it, Abaddon can barely keep the Traitors working for a common goal, what chance does some word bearer have? Also I would've though Admiral Catallia would be running away in fear, the Vengeful Spirit did decimate her entire fleet single-handedly.
I would not work or serve Chaos for one simple reason: You can´t trust anyone. Everyone has an angle and in Chaos army, it´s pretty much a dog-eat-dog world.