I have heard rumors of the USP 45 (full size) having decocker failure issues resulting in accidental discharge. While I prefer to carry mine cocked and locked, I will on occasion carry hammer down in the DA first shot configuration. When doing so, I point the muzzle in a safe direction and depress the decocker lever to go to DA/SA mode. I was recently told this was extremely dangerous... if that is the case, what is the purpose of the decocker and why wouldn't I just decock it by pressing the trigger while simultaneously slowly lowering the hammer with my thumb - like I have always done with my 1911's or Browning HiPower? Actually, this is how I now decock my USP, but by using the decocking lever in lieu of the trigger when slowly lowering the hammer with my thumb. Is there truth to this rumor?