I can't say that I've tried them, but they would be a very good source of protein, at least.
Things like their tendency to use a duel to the death to solve issues related to their honor code. That is not something that my culture would do, so things can get kind of difficult. I've never heard of any of those species. At least I'll have plenty to keep me busy learning about everyone here.
That... sounds handy but just leads to more questions.