You don't think they can address both needs? What are non-MIT schools teaching when they teach CS if it's not SICP? Is everyone else just a vocational school?
It's okay to use different tools. Don't worry about it so much.
FWIW, I spent a lot of time in Notepad++ with my own syntax and settings setup for a specific video game I made mods for. And then I learned Linux and really bought into BOTH Vim and Emacs. And then I stopped playing around with computers and pretty much forgot about all of that stuff. No hard feelings.
I'm a type 1 diabetic and get to monitor my blood sugar level, and there's just not much difference in between these oatmeal styles when it comes to digesting the carbs.
Read the job ad and mirror back to them the terms and language that they use. If the job uses X_lang, probably make sure to put how good you are at X_lang with the presumption that they're going to call you on it if you say you're an expert.