"He concedes that wage inflation hasn't picked up in the usual way, but isn't convinced that it's not coming."

I'm less confident about wage growth than is Poloz. Governments have done everything possible to ensure that wages have remained stagnant, not the least of which are immigration, temp worker and visa programs designed to ensure that Canadian workers are competing on home soil against workers from the rest of the world. Also, the notion that the economy is operating at full capacity is highly questionable. According to BoC data (see citation), the labour force participation rate remains below the pre-recession level (67.6% in Jan. 2008 vs. 65.8% in May 2017).  

http://www.bankofcanada.ca/wp-content/uploads/2017/07/san2017-9.pdf