I get the impression that some people think that the PLB is the magic survival talisman. If you have a PLB, you don't need matches, a compass, map, sleeping bag, signal mirror, water, etc. Just stash your stuff & climb. The PLB will save your life, but only if you don't freeze to death or die of dehydration first. Rescues have been delayed by bad weather, exactly the situation when you will need the usual survival stuff the most.