A few years ago I was unfortunate enough to have to re-do the exams having allowed my IR to lapse for too long.
On the crammer's course were two chaps who were CPLs from the charter world hoping to move up; they clearly knew each other and on several occasions made jokes about how there were actually no limits whatsoever on an ILS.
Now I might have been mistaken in drawing the conclusion from what they said [in great detail] that here were chaps flogging around in unstabilised aircraft doing IFR approaches on CAT flights without IRs to below published minima. Perhaps they were just bull$hitting. Personally......