The only thing I don't like about anything hanging off the gun is i'm a still hunter. I try to keep all movement to a minimum. Anything swinging under the gun will be seen by the game.
The safety stays over the cap until time to shoot. I pull the trigger back, then thumb the hammer full back, release the trigger and let the hammer slowly forward to catch at full cock. No "cocking click". Then the safety comes off and, yes, at that moment it will hang a lanyard length below the gun for a few seconds before firing.