BOAC, I don't see much harm in trying. With a fast changing weather, it's only natural to try to fly down to minima and see how it goes. And it doesn't look like I'm the only one — I readily remember a couple of cases like that when I was a passenger on a commercial flight: a Comair into KDCA (holding for about an hour, making three landing attempts down to minima in the process, then diverting due to low fuel) and whoever was flying regional for Continental into KEWR (they landed on the second attempt). Of course, the key here is flying to minima (i.e. by the book) and not „let's see if we can make it to TCH and land from there”.