If the complete manufacturing process is done exactly as engineered, this should work. But I don't like the number of manufacturing variables in these high load foam systems. Just a note on cost - real marine woods cost about the same as foam cores, so we're not using wood to save money. There are a few, but cost is probably the first. Next would be the way the boat feels to an experienced V-bottom boater as it turns.
Cats go around flat or actually lean slightly outboard in fast, sharp turns.
The sensation is much like a car turning, which is unusual on the water. The final negative, and its rare, is that catamarans can lose their smooth riding characteristics if the boats are grossly overloaded. It's my design with U.S. patents issued in 1991 and developed in the Northwest with a number of scale models and full scale engineering boats. Australian boats of this size are designed to plane, limiting how soft the ride may be. Planing boats also throw a good deal more spray underway than a Glacier Bay.