I think he is. But he aint black so you chose to ignore it ( and i know, Rigo is slicker than him). Sergio Martinez is another one slick non black fighter too. His posture, punch placement, and speed says it all.
I don't see him as slick as much as quick. He doesn't let his opponent get away with anything. They leave themselves open after throwing anything he lands and lands clean.
What's funny is I've always said that I love how Donaire fights, my dad loved the brawling Mexican style, I loved the slick make it look easy black style, if Donaire were black we would call him slick but for some reason Donaire fans deny this, I've had a argument like this on Asylum, Donaire fans really don't like it.
Nonito is a proper fighter. He is slick and likes to get involved in a fight. Got pretty good fundamentals as well like footwork.
I don't think he's slick, he's a bit robotic at times even. His right hand has always been forced and awkward looking. He doesn't have the best defence or head movement either. I definitely would not call him slick.
His left side is. The rest is stiff and laboured, when he's throwing a right or on defence he's stiff.
¿ Slick ? , lol , gtfoh , he jumps when he punches , his footwork is atrocious , all those little uncoordinated little jumps he does from side to side , always out of balance and his defense is non existent , all in all he is a badly schooled overhyped fighter . Peace .