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Yes sir, they are B&W ebony.
This was my first two day set, though I swapped out one of the wedges for a hollow ground that Tom sent for replacement. The wedge was in a bad way, and needs reground....

I coat mine once a year if needed. My rotation if somewhat large, so they don't see a lot of use throughout the year.
The carnuba should be fine.
Some woods are dense enough to polish to a shine...

So true, nothing worse than a gummy, sticky, set of scales sucking up dust and other things. For porous woods I prefer the teak oil, its the WD-40 of penetrating oils for wood.
The last pic is of...

I've done quite a few wood scales, if I'm not using a sealer, I use teak oil or Bee's wax and orange oil made by Howards...