I've found you get questions about anything non-standard you've done for any institutional like job. I used to teach English in China, it was fun, but I'd never do it again. Still, it's come up in a negative light in interviews years after the fact: "How do we know you won't just leave for China?"

(I want to be generous and think it's because in large companies the how-we-do-it-here knowledge has to be taught, so it's more valuable than the how-to-get-it-to-compile knowledge and they need long tenures)