🙂 I do see it sometimes, but if the carbon rods are rigid then I don’t know what the rod is for, unless there is some give and it needs tweaking.
(I’m thinking/musing out loud, btw...)
Ah - I wish I could do woodwork like that!
Personally I don't go for the sperm whale look, but the selection of woods makes up for it.
A question: what is the purpose of having both graphite rods and a truss rod?