I had one for CCW but got rid of it. In my experience the loaded-chamber indicator would cause the slide to go out of battery. You see, the loaded chamber-indicator is basically a little metal rod that protrudes to the breach-face. When a round is in the breach, the little rod sticks out of the rear of the slide, where you can feel it with a finger and see it as well.
In my experience, whenever I had a round in the chamber and put my pistol in the holter, the slide would retract a little, but the chamber indicator would keep the slide out of battery when the pistol cleared the holster, making it unable to fire. It actually excerted that much force on the edge of the bullet, in fact the little metal rod kept it from going back into battery...not good. There's a reason no modern design uses this sustem.
Most other pistols would have the slide close back up as soon as it cleared the holster.
I got rid of it and bought a P7 instead.