The same principle applies to the NO SMOKING signs, if operable, except the protection comes from gear extension.
Reading that reminds me of the days when smoking was allowed in the cabin. I seem to remember that the No Smoking sign was switched off pretty promptly after take off, presumably so that the nervous could light up asap. I think the Seat Belt and No Smoking signs were switched back on simultaneously for the descent (at least for BA which I mostly flew in those days).