The trait is sort of funny, but I think there are less than a dozen places where it pops up. Plus, while having the trait can earn you a powerful weapon, you can get a different powerful weapon for not having it. So if there are two other traits you like, then I wouldn't worry too much about WW, but if you don't see any traits you like, then there isn't any reason not to select it.
Sir Edmund: "Should you obey the lord who asks you to put a village of innocents to the torch? Is that chivalrous? Is it noble?"
Me: "It's a great way to get promoted, I know that much."