Have 2A looping yoyos been perfected?

[codinghorror]

See also

Any metal looping yoyos?

Is there such a thing as a metal looping yoyo? I realize that metal hurts more if it hits you, which is probably more prevalent when practicing 2A, but at some point I figure you get good enough that hitting yourself doesn’t happen anymore and metal becomes something you don’t have to fear. Or am I wrong about that?