Roger, I don't usually participate in threads that mention PGO shotguns because they always seem to devolve into childish bickering and the "signal-to-noise" ratio hits rock bottom, fast.
In this case, I think there just may be some value in making a few comments, so I hope you take them in a spirit of friendly concern.
In my situation, "more maneuverable" means I can lean over the edge of the bed, grab the pistol grip, and be ready to go without getting out of the bed. A common stock would require me to stand and shoulder the weapon.
With the greatest respect, I believe you need some training, or at the very least you need to seek out the wisest guidance you can find and then practice. This statement, if meant literally, indicates a very poorly conceived defensive strategy, and some misconceptions of how to fight in close-quarters with a long-gun.
Ready to go, in a gun fight, without getting out of bed? A full stock requires you to stand? This is not a well-informed plan.
As a nudge in the right direction, practice moving to a position of low cover and concealment, and firing a full-stocked long gun from various field positions besides standing. In the extremely unlikely event of a home invasion requiring you to defend yourself in your bedroom, taking cover behind the bed or some other cover/concealment and accurately firing a full-stocked shotgun from a kneeling position will make you ten times as effective as any possible scenario involving you firing a pistol-gripped shotgun from a supine position, lying in your bed.
Even a few minutes of practice will show you the value of a more considered technique.
For those of you that think the pistol grip is "strictly hollywood'... how many of you are willing to break into my living room?!!!!! Put your money where your mouth is!
Please don't fall into the trap of using this tired cliche. No one here cares quite enough about your safety to figure out where you live, travel to your home, commit felony breaking and entering, and risk (however unlikely) catching a shotgun pellet -- just to prove that your notions aren't the very best. We can provide a little advice. Taking it is up to you.
Think of it this way: Such hyperbole is about as valid as those folks who defend a .22 LR as a viable self-defense cartridge by saying, "Well, if a .22 is no good, then let me shoot YOU with one!" Finding no takers, the smart fella then decides that .22 must be quite the man-stopper.
Don't be like that.
-Sam