When I first started practicing fast draws, I used a hybrid of a method taught in Bill Jordan's "No Second Place Winner" and Applegate's method. About 1/3 of the time, I totally missed my target at distances of about 10-20 feet.
Later, when I took my first concealed handgun class, I was taught a 2-handed point shooting method, with the gun at chest level. I qualified, but it was one of the worst targets I ever shot.
Ever since, my electronic timer and the holes in the paper tell me that using the sights is not only more accurate, but faster, unless your target is so close that you need to use a pectoral-index retention position (inside 5-6 feet).
I have learned that, if I can't see my sights, I can shoot almost as well by going through exactly the same motions as I would if I could see the sights, but looking down the top and sides of the slide, at least inside 30 feet. The technique was particularly important for my Kel-Tec P-32 and North American Arms .380 (before I had Novak tritium sights installed on the latter). Notice I said almost as well, not as well. In fact, the Novak sights on the NAA .380 significantly increased both its usable range and the speed with which I can shoot it.
Seecamps don't have sights, and NAA offers a carry package with no sights on their guns, so the few who spoke up above are hardly the only ones who don't believe that sighs are necessary on such a gun.
Signts are often reduced to the point of uselessness or eliminated based on the mistaken idea that they will snag on a draw. I have had hammer spurs and even a slide stop snag on a draw, but never sights. I've asked many times on various forums (consider this another time) if anyone has ever actually snagged a sight on a draw, and have yet to find anyone who has. It is too easy to design a highly visible, snag-free sight.
I'll always take the best sights I can get for these reasons.
