A brown corduroy suit already sits somewhere between tailoring and workwear. The cloth does most of that work: thick, tactile, informal.

The blue chambray shirt pushes it further away from conventional suiting. So do the suede loafers and the Western belt. None of those details cancels the suit; they simply change its register.

What remains is the structure: matching jacket and trousers, a defined waist, a clear vertical line. The formality is still there, but it is carried by proportion rather than polish.

That is probably why corduroy suits are useful to me.

They keep the grammar of tailoring while allowing almost everything else to become casual.