🙂 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?
My best strap is a leather one I had made by somebody local I met at a car boot sale; it's just a strip of leather with a Straplock at each end.
I don't need an adjustable one; all I do is measure them to the right length and then hope they don't slip.
So I had mine made to the right length to start with and never think about it.