It hasn't affected us so far, so I don't mind it. If Kyrie comes in into the 4th quarter well rested, it's all the better. Let's also remember that Irving has injury history too, so it's best to not run him to the ground, especially this early.
But with that said, I think this is whey we, atleast for this season, could use another guy that can score coming off the bench. While it has not affected us so far, it's also worth adding to our strength and be able to keep doing this without having any setbacks in the next coming games.
He's averaging 31 minutes per game. If we can sustain the winning and keep doing this after the 82 games, he's going to be relatively fresh for the Playoffs.