Interesting stuff. With a sampling of 10 - 15 churches, he'll get a pretty good idea of what Christianity in his local area is like. I doubt he will change his mind on the theology, since his objection seems intellectual rather than spiritual. (He would do better talking to a theologian at a university or religious institution.) But he might at least find that many church communities are kind and welcoming, regardless of his outlook.
He certainly seems OPEN to believing, but then again it could just be a ruse. Not knowing his motives for sure, I'll give him the benefit of the doubt....