I had a co-worker (about a decade ago) who took two weeks of vacation, and started his own "reverse trial" at a new job without quitting the old job. He liked

I had a co-worker (about a decade ago) who took two weeks of vacation, and started his own "reverse trial" at a new job without quitting the old job. He liked the new job, came back from "vacation", and gave his notice. I don't remember how much notice he gave. What's good for the goose is good for the gander, I guess.