For shooting off a bench, where the rifle is shouldered, and using a mechanical front rest/rabbit ear bag, OR, bipod/soft rear bag, is there any advantage of a pistol grip (AR or chassis style) vs a conventional stock grip (from McMillan A-5 to hunter style)? I thought being able to put my thumb over the rear tang area would make me side with a conventional stock, but somehow, on my AR-15, I don't seem to mind not being able to do that. That is until CA forced me into AR-compliance and replaced the grip with one that has a thumb shelf on the shooting side, which I am surprised, is not as bad as I anticipated. I still kinda's miss the old custom grip, but it is now in the unused "assault" parts drawer. Somehow it becomes harmless if I put it on a bolt action chassis rifle, but I digress.