After stumbling backwards this summer when a limb I was pulling snapped and nearly killing myself landing with ribs and midsection on a small pointed stump, I am a bit more careful now. And I was not even off the ground! I can not imagine falling from 20 ft up. I have some platform stands, but they are not too high, and they are safe to climb and sit in with surrounding walls.

If I were to use a climber, I would make sure to have safety equipment. I would never depend on only one hand grip, or even one safety strap that might be chewed by a squirrel, frayed, or compromised in some way.