I wouldn't consider them to be an especially difficult fight and far from the hardest in the game. I think I can say that with some authority because 1) I am really bad at combat: I mean really, really bad; 2) I really suck at tactics; and 3) I nearly always roll low. They're not a pushover, but they're not that hard either as long as your dudes don't all bunch up in handy striking distance.
