I'm with RAM, Slingshot. Using the slide release is a bad habit to get into to release the slide to chamber a round. For many reasons including wear of mechanical parts and loss of fine motor skills in a high stress situation. The issue is fine vs. gross motor skills. Another reason is when your hands are wet or cold or you are wearing gloves. When you have had an adrenaline dump and your heart rate goes over 140 bpm, you will start to loose your fine motor skills. At 180 BPM you will have lost all of the fine motor skills and using the slide release with any finger will not be an option.