Something I forgot to add was that on a pistol the Ashleys are so much faster than the ghost ring set up. On a long gun I find it easier to line them up, more than likely due to the longer site radius. But on a pistol, especially a defensive weapon, I find myself more apt to point shooting. What can I say, I've heard front site, front site, front site so many time its maddening. Trying to look over the ghost ring or trying to focus on it at CQB ranges was just too slow for me.
Be Safe
Mike