> I'd actually worry if the engineers I work with couldn't pick up a new IDE/text editor, etc. pretty easily and quickly
Once you start making full use of your editor, switching to a new one and reaching the same level of proficiency takes a long time. I can edit code even in notepad, but I can't ever be as fluid in it as my main editor. I've changed my editor multiple times and it's a huge pain every time.
I'd actually worry if the engineers I work with couldn't pick up a new IDE/text editor, etc. pretty easily and quickly, if and when something like this happens. And I'd say the risk of it happening in the next three to five years is pretty minimal at this point.