Murakami–Przytycki's unknotting-number conjecture for positive fibered knots

Let $K$ be a positive fibered knot, let $u(K)$ denote its unknotting number, and let $g(K)$ denote its Seifert genus.

Murakami–Przytycki's conjecture. For every positive fibered knot $K$,

$$u(K)=g(K).$$

The conjecture concerns whether the lower bound supplied by positivity is always sharp for positive fibered knots. The source presents it as a further related conjecture and gives no resolution, so it remains open here.