Trango BallNutz: Clean Climbing Technology, Surpassed

The least useful BallNutz sizes were the largest, which could be bested by cams in nearly every situation, and the placement of smaller sizes needs pretty specific circumstances. I can't currently justify keeping them on my rack, even while aid climbing. Offset cams, nuts and hooks have worked perfectly fine for nearly every route I have climbed. And despite their superior strength, I am still searching for the opportunity for when I actually need my set of BallNutz.
Pros: Stronger than similar cam sizes; replace the use of knifeblade and lost arrow pitons.
Cons: Copper-coated ball so soft it deforms easily; repeated use of aid damages wires and decreases functionality; higher probability of protection failure when placed in soft rock; hard to clean.