Well, like I mentioned at one point or another, what I'd like to see is them being together most of the time but during fights against Yoma Raki would be well away to make sure no Yoma could use him as a hostage against Clare. However, whenever some stupid band of rogues would choose to assault Clare, then Raki would deal with them. After all, Clare's pretty much only option is to run (or leave no witnesses, but frankly that's not how Clare would act). She could escape easily enough - that is, if she was alone. But with Raki around, it's not such a surefire option. So, if Raki instead was a badass swordsman as far as a human can be, it would again be no problem, but instead would make him look cool as well.