Yeah maybe. The default vi config that comes with FreeBSD will get out of insert mode if you use the arrow keys to go beyond the end of the line (and maybe some other situations I've forgotten).

Editors are extremely personal, there's a pretty good reason that vi vs emacs is one of the eternal flame wars. I would absolutely expect a bit of discomfort and less proficiency with a different computer and a different keyboard. And, quite frankly, I'd be pretty put off by an interviewer who expected I'd hit the ground running with neither apprehension nor mistakes on someone else's computer.