The Grillon is an adaptation of the popular Grigri belaying device into an industrial lanyard. The smooth cam feeds line on command, yet locks when a load is applied to the lanyard. The difference in the Grillon and the Gibbs or Microcender is that the Grillon can release line with your body weight against the cam. The Grillon comes with its own lanyard. Disadvantage? The Grillon will not accept Steelcore Fliplines. Hey, nobody said it was perfect!