Example with the Slackibloc 3.1 : We can wonder if it would be suitable for itto break at 1, 2 or 3 ?
1 : If it breaks at 1, the weblock will not be hold anymore by the shackle. Il will thus fly in direction of the rider. Not so good…
2 : if the weblocjk breaks at the second location, same conclusion, still bad…
Last solution, n°3 : Then, the webbing will be liberated (perhaps cut, dependind on the configuration) but the weblock will stay in place.