Tires and clutching

Eventually i want to swap to 31" outlaws and also get a second set of trail tires. I want to clutch it for the laws as they will get the better workout. Should i get trail tires that weigh close to the same to be close with the clutching? Im debating between 30" blackwater evos if the weight does matter much or 30" pitbull growlers if i should try to keep the weight close.