Is that the one that sort of looks like a revolver grip?What for?
Assuming you mean an actual pistol grip like a Vindicator, I think a regular buttstock is easier to wield under duress. The stock can be tucked under the firing forearm or in the armpit and easily fired one-handed if necessary. One-handed is tough to do with a pistol grip and such a front-heavy rig. I have a Pachmayr Vindicator set for an 870 in a box someplace that I thought would be wonderful and it wasn't.
If you mean pistol grip vs a straight wrist, I think it's personal preference and the feel is not that different.
What for?
Yes.Is that the one that sort of looks like a revolver grip?
Ahhh, NOW we're going places...Home defense.
Honestly didn't understand your distinction between a Vindicator and a regular pistol grip. As an example, the M4 is available with a pistol or without one.