Btw - for those who like exploring finishes, I have one other to share:
https://osmo-store.com/
Mule resonator guitars use them on the neck and I have seen videos from a Canadian luthier using it on his necks. The effect on Mule guitars is quite impressive visually and the neck feels very smooth (although that is obviously more than just the finish).
I haven't found examples of people using it beyond the necks, although I assume that you must also be able to use it on the back/sides if not also the top.
Sean