J-Novel licensed Death's Daughter and the Ebony Blade, which sounds almost identical enough to this story that it borders on plagiarism... So we'll probably never get this one. Oh well.
Hmmm I only read the beginning of Ebony Blade but those two are fairly different. Only because we have two female MC and a death god doesn't mean it is a carbon copy. Oh and by the tone of what I read I see Ebony blade more as a happy go lucky kind of thing (I remind that I did not read it fully till now) and you can consider "the Girl who ate a Death God" as dark fantasy.
I would really love to see Maouyuu Maou Yuusha get licensed. I really enjoyed watching the anime, and if I get to relive that enjoyment through the novels, then so be it. Considering how much I liked Log Horizon's LN, I have no doubt I'll enjoy this one too.
People says it has its similarities to Spice and Wolf (which is true), but it also offers something unique to it.
I personally would absolutely love to read this series, it's actually the light novel series I would like to get translated the most in fact. I thought the anime was great and I would love to find out what happens further in the story.