Seeing as how it wasn't in the best interest of anyone to fight, Scar allowed them to pass through him. As long as they didn't attack him or his subordinates, he didn't care what they did.
"If that's the case then, be my guest, you may pass by me. Whatever you choose to do with your lives is none of my concern," said Scar. Scar wasn't the type of person to dress to impress. His attire was a simple black trench coat with black jeans and tinted black glasses. It was as if he was trying to either hide himself or make himself the centre of attention with his odd sense of style.