Rab does a merino/Cocona mix they call MeCo – it’s mostly merino with a bit of carbonised coconut husk thrown in. The fabric still has merino-like qualities, but it wicks significantly better and dries a lot faster. It’s also more durable ime. Good stuff.
This stuff…
The thing that the reviews rarely tell you about merino is that it’s relatively fragile and tends to hole easily with sustained use. Also that it doesn’t so much wick, as hold moisture away from your body, so it still feels comfortable, but there’s a point where it stops holding moisture and gets wet plus takes a long time to dry. Just saying