Have you shot the pistol? You need to practice drawing and shooting before you start to rely on the device.
When they first came out a friend of mine got one. I shot it several times and was unable to hold on to it. Interesting to shoot and then try to catch the pistol as it flies through the air.
Frankly some of the smaller pistols are just as concealable and are easier to control.
Small caliber pistols require a minimum of two shots. If you cannot control the weapon then it potentially becomes a liability.