Our closest aggregate measure of demand for the FSC products is the demand for Chain of Custody certificates, required of companies processing certified wood and fiber for products taken to retail markets with the logo.
That said, it really does feel quite nice in the hand -- the device we played with had a leathery grip -- there are a number of carbon fiber and wood options available, as well.
Each one is handbuilt out of sheets of lightweight balsa wood sandwiched between layers of carbon fiber or Kevlar and baked in an oven at 100C for stiffness.
There's also gray birch wood trim--or optional carbon fiber or aluminum--with lots of chrome and brushed metal splashed around the cabin and, naturally, S4 logos everywhere you look.
Meanwhile, the US Forest Service has been deriving cellulose nanocrystals from wood pulp extract to create a material that's stronger than Kevlar and carbon fiber.