Which is the question of the benefit or not of a more or less orthotropic material...What is seemingly not understood, is if a 3mm Thick Panel with In Lane Grain or Cross Grain as the structure, is able to produce sound that is discernible from each other and if one Structure is an improvement as a Panel material over the other.
The common plywood is with a cross grain structure. A in line grain structure may need a specific sourcing with the according cost. Without an idea of the benefit, it could explain nobody tested it.