Here you can see file footage for Sweeney. This picture originated in TheDeadly Wait and was again used later in The Coward. As you can see the pictures to the far right, Sweeney is dressed differently.
I can't help but wonder if they added this picture to The Coward to make it look like Sweeney was the one who yelled "Lucas" to warn him of Billy coming at him with a bottle. We never did see who hollered we just heard them and then they showed Sweeney's picture. Cowgirl!