I would agree with you here Kevin. It is nice to have a smaller dia rope for many jobs. Tag-lines, butt-lines, haul-back ... there are many good uses. I don't think that I would use these for a lowering line in everyday circumstances. The idea of being made of no-stretech exotic fiber means to me that the forces generated in lowering would then be distributed amongst the rigging and the tree itself, and not absorbed in part by the line. Not good for most jobs. These lines also fail without warning, meaning that it would be near impossible to predict. Still, I do like the added option of having one on the truck.