On the inside of Duncan Mackenzie's gloves are the initials EGC and RLM. The refer to his grandfathers who had a large influence on his growth and character. One was a hard working operating engineer who ran a crane in remote locations and bought a vineyard after retiring. The other was a wealthy Electrical Engineer who built a large firm from the ground up through the 1930s up to the 1980s. Both had different but important outlooks on life that was necessary to the growth of Mackenzie as a person and athlete. Knowing when to push and grind and knowing when to back off came from these two people. The other highly important skill learned from them was profanity. Both could swear as if it was an art form they had perfected. They could go on a ten minute rant and not repeat themselves. When you were on their bad side, they would let you know very bluntly, but then teach you how to do it better. DMack uses this when dealing with his teammates on and off the ice.