i bet they would work pretty good....it's just like the movies..you send a piece of string or wire fast enough it will slice through anything...the part about bouncing of bone or moving around it has me concerned though...you sure wouldn't have to worry about flight problems, should fly like your field points.
It says they are titainum. That could be the reason they are so expensive. You would never need to replace the dang thing cus you cant bend or break it like any other field tip or broadhead.
If anyone gets any of these let us know how they work out. Im intrested. I hunt in a lot of rocky desert terrains and this could be a great thing.
