From testing with the new motion lighting app I created, it seems the disable-off switch is working regardless of whether I set that laundry switch to on before/during/after motion, which is what I want.
I do wish there were a way when the laundry switch is turned off (which I want to be 15 minutes after turning on, enough time to deal with the laundry) to evaluate if there is, at that time, any hallway motion, and if not to turn off the lights then. But I imagine that's not so standard and would require Rule Machine. And I don't want to build that...