The pistol grip stock provides the very best and most optimal hand grip on that weapon.
I have been using shotguns for only 35 years, so I am no expert, I bought a long time ago, the 500 with the PGO. One outing had that come off and get replaced by a plastic conventional stock. Since all the rest of my shotguns are used for moving targets, the pistol grip is the worst choice for me. While it may be comfortable to grip for you, it is also transmitting the harshest recoil to the web of your hand, and with powerful loads, that begins to hurt