His combat style would become more versatile. Instead of relying solely on his Rasengan and other ninjutsu, the swords would give him an edge in melee situations. He could use the swords to deflect incoming attacks, and then quickly follow up with a ninjutsu. For example, he could block a kunai throw with a sword and then launch a wind - style jutsu at his opponent.
Well, if Naruto can summon swords in fanfiction, it would add a whole new dimension to his combat style. He could use the swords for close - range combat, which is something he's not typically known for. He might combine his shadow clone jutsu with sword - based attacks, like having clones attack from different angles while he uses the swords to defend or counter - attack.
This change would also make his battles more visually appealing. The addition of swords means there would be more flashy sword - slashing moves. He could develop his own unique sword techniques, perhaps inspired by his friends or past battles. And in team battles, he could support his teammates better by using the swords to protect them or create openings for their attacks.