Autoloaders are available in practical single-action mode, if that is better suited to you. Many models of autoloaders have safety levers which can delay someone who gets hold of your gun from using it against you. If you don't train diligently, the safety can also delay you . Autoloaders frequently hold more rounds than revolvers. This would seem to be a big advantage except that experience suggests that having a lot of rounds in the gun seems to discourage good marksmanship.
Autoloaders are faster to reload and easier to reload under adverse conditions.
Clearly, the fastest reload with a revolver is a second gun. This actually may also be true for an autoloader if you're not just on a range and aware that you will be needing to reload. Autoloaders may be easier for some people to conceal due to their flatter shapes. Revolvers may be easier for some people to conceal because of their rounder contours, especially in the round-butt versions. Spare ammunition in magazines, particularly single-column magazines, usually conceals more easily than spare ammunition in revolver speedloaders.