Kind of negates the advantage of having a shotgun that can handle more than one round. Only possible advantage I can see would be for someone who can't handle a large-caliber pistol because of their size or some physical infirmity. Even then, the disadvantages, to me, outweigh the advantages.
Me? I'm still like the old Cajun who had one of them shoot-guns what shoot three times when the game warden is around and six times when he ain't!!