Jesus wept, you don't have to make the poor guy choose
He's kinda already chosen by not backing the Nix during the derby, yes he's a sports "journo", commentator but he's a Wellingtonian, born and bred as I understand it, plays(ed) his footy for Tawa masters 1 team. So whilst I'd expect his comments to be impartial during the game I'd expect that he bleeds yellow and black and he'd be proud to state that. Instead he sits on the fence.
Just like Paddy Gower, he's clearly Nix all the way, but writes opinion pieces about both teams.
He's the main commentator, not the colour/pundit role. Of course he remains professionally neutral during a game!