adapters for shotgun to shoot handgun rounds - anyone have one?

https://www.youtube.com/watch?v=wdBbzCZkqoM

I don't know why someone would want one of these adapters .... but there may be reasons

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!!:lol:

I have a couple, 9x19 and 45acp. Had them for almost 40 years now.

Sounds good for a SHTF scenario and you have a shotgun but no pistol. When the SHTF ammo will be available, odds are not in the caliber you or others use.

ETA: I will say though the adapter appears to be more of a burden to use that makes it suitable only for a survival/SHTF scenario.