The early signs were good.
Cane nobbled Brian O'Driscoll with his first tackle which forced a turnover because of some strong assistance from Sonny Bill Williams.
Cane's first carry was even better when he latched on to a pass from Aaron Cruden. The flanker belted his way past several tacklers although he undid his effort when the ball was dislodged from his grasp.
It was just a taste though, just a tease of the impact Cane would make.
He showed patience and game sense to hold his position out wide as the All Blacks worked through the middle of the park before passes from Williams then Cruden released him for his first test try.
All Cane's instincts would have screamed to hunt the ball or get in tight to support. But with the All Blacks his job sheet is far more specific, much more tailored to the talent throughout the team.
When those skills were needed he delivered.
He smacked Peter O'Mahony back from a scrum and clipped into his work in the breakdown zone.
After Ireland began a counter-attack from deep, Cane tracked across field and swamped Paddy Wallace when he got an inside pass.
He bounced to his feet and claimed the turnover in a classic example of the arts of open side play.
His work must provoke thoughts of a Cane, McCaw and Kieran Read loose forward group when the All Blacks play the Wallabies at the start of the Rugby Championship.
Cane's loose forward growth would benefit even more working in tandem with McCaw whose energy, power and rugby wisdom would soak up the blindside duties.
Victor Vito's recovery from his knee injury will be a central issue in those decisions.
If he is back to full health and form then he will make the mix.
But Cane's first few appearances in black suggest there will be more. How many, who knows? It is a tough role, a brutal position where damage is expected.
In truth he still has his international L-plates but the young flanker has pace, size and gets in the right places with significant impact.
Reporoa's rugby jewel is making big strides towards the global stage.