Pistolgrip-only stocks look cool, and they can be stored in smaller places. They can also be maneuvered slightly better in very tight confines.
Speaking as a former firearms instructor, I'll say that they are infinitely harder to use well across a broad spectrum. The few guys who tried to qualify with them at department shoots always had the worst times & hit ratios. They were tolerated on personal shotguns if the owner could qualify, never issued, and you cannot , NO MATTER HOW MUCH YOU LIKE THE DAMNED THINGS, achieve the same level of performance as you can with a full-stocked model.
Yes, you can, with practice, improve. But, take it beyond 7 yards, put up multiple targets, use serious buck and/or full-bore slugs, and you'll lose to the guy with a regular stock.
For very close use, firing from a hip, you can achieve a certain level of proficiency that might get the job done. Recoil control and recovery will be more problematic than with the shoulder to act as a recoil barrier, and I find the idea of sighted fire awkward & slow with a PG-only shotgun. It'll certainly be very slow for successive shots, compared to a full-stocked gun. If you've got room to bring it up to eye level, you've got room for a full stock.
At ten feet, with only one shot required, it could do, and if that's your only scenario, go for it.
I choose, after several years of carrying & maneuvering a shotgun through buildings and around them, to not handicap myself. The PG-only shotgun is an extremely limited, and limiting, tool. No professional instructor that I'm aware of advocates them.
As far as getting around corners and down hallways goes, proper carry technique (muzzle down at an angle to the body) allows movement in constricted areas with the ability to get the muzzle up quickly into a firing position either low or high, depending on the space available & time available, for effective repeat fire. You learn the techniques, and the full-stocked version is much more adaptable to a wide range of use than the PG-only stock can ever be.
This is one of those "Don't confuse me with facts" cases.
Denis