I have a “Pager Pal” but rarely use it, don’t work too well with jeans, especially when seated. I prefer to carry in a pocket holster inside my right front pocket, I take the gun out and place it under the edge of my right leg when I get in a vehicle.
That said, I have seen demonstrations with the Pager Pal where the gun was drawn and ready to fire much faster than from any other type of holster (unless the person already had their hand on the gun). The demonstrations were always from the standing position, I think it would be hard to draw while seated.
Funny, every time I ran across the guy that sold and demonstrated the Pager Pals at a gun show I would interrupt him and tell him I shot the end of my “Willie” off trying to use his holster. The first time I really had him going, it drew a large crowd and everyone was laughing. I them told them I was joking, that he had a good product. It sold several holsters for him..