Not super complex but so nice. Leather, marshmallow, dunnage perfection, marine air, hemp rope, creme brulee. Nose and palate are equally delightful. No awful sulfur to contend with.
On the negative side, it takes water surprisingly badly for a Springbank 12 CS. More than a few drops of water really tends to ruin it. I will only drink it full strength. Usually, with Springbank cask strength releases of all kinds, I tend to apply some water, but not in this case.