It is a clever idea but it assumes a hell of a lot has gone wrong with your hunt. I've had pass thru shots that clogged with pieces of lung on one side, and intestine on the other (entry was too far back.). I've had a shot that went thru both lungs and didn't give me the expected blood trail....I just followed the direction the deer had run and found it. This product would not have helped at all. I have never had an arrow break off in the deer, and not find the the deer.
I suppose if I was shooting much larger animals....elk or mule deer, then maybe I could have this issue. A clever solution for a non problem I think.