First of all it looks like a well made call. But I'm with Joe and JCZ. I think the insert looks much too similar to the barrel, which makes it look a lot like some of the short reeds that folks build and makes it hard for someone to distinguish between barrel and exhaust. I'm a fan of being to easily distinguish between the two, as you can when the band tenon is significantly wider than the insert. To me, that design fits the hand much better too.