[Zeke]

So, you say give 2 weeks notice with the expectation of being asked to leave immediately. And do this for social etiquette.

If I had observed previous employees who gave notice walked out that day, I'd save them the trouble. If, however, the employer treated the worker well on exit, I'd give notice.

I'm sure if someone asked why you walked out on the employer who would walk you out, you would just say, "What's the difference?" If they don't know, you didn't want to know that person anyway.