It doesn’t seem like there is much of a point to focusing on hiring for a particular language. If someone knows 2 or more, they know how to take some pretty universal concepts and apply them in different languages. If my company told me tomorrow I needed to use language X from here on out, it wouldn’t be a big deal. The basics come quick and quirks and optimizations will follow when using it every day.

I think I’d feel compelled to try to explain this in an interview instead of answering specific language questions. I’m not sure how that would go. I haven’t been to an interview in years.