From what I saw tonight, I think Hunwick and Oleksiak work well as a pair in terms of play strength. Oddly enough, Oleksiak's biggest issue as far as I could tell was defensive positioning, he would sometimes drift out of the play or go out of his way to make a hit. Positional play is probably Hunwick's biggest strength. On the flip side, Hunwick is butter soft and small and Oleksiak obviously complements that. Both can skate well and both can move the puck (I think Hunwick's puck moving looked better tonight than when he was on RD) and I think both of them complement each other well. It's early, but I'm optimistic about that pair.
It's no longer a Cole-Schultz bottom pair, aka a 2nd pair as the 3rd pair, but I think a Hunwick-Oleksiak 3rd pair can be very effective.