I have to shut everything off/power-down, and get 3-4-5 done at a time. Lotta damned wire pairs in those wall boxes, too. So far so good; I haven’t zapped anything when the power is turned back on. My neighbors do this stuff *hot*, but I have an overly-healthy respect for 110v & 220v.
I don’t blame you for having respect I know I wouldn’t want to zapped into next year.