Shibui
Imperial Masterpiece
Here's just one thread showing that black pine layers are not only possible but also quite quick to root.
https://www.bonsainut.com/threads/88-days-air-layering-japanese-black-pine-x-2.56735/
https://www.bonsainut.com/threads/88-days-air-layering-japanese-black-pine-x-2.56735/