Thakns Perey, Ryan And Dr. Q!

These are just oiled. The jatoba being tropical, will have some good end grain without getting in color issues. 

My plans for future exposed box joint fingers involves a pass over a core box bit to get a very subtle rounded groove in some wood sticks. Glue in some sanding paper and then I can round over the ends in both directions after cutting the
fingers.
Next step would be to figure out a way to glue up without having to deal with squeeze-out.
I know how you like to move on and create new pieces. 
Yep, I get bored easily with most stuff. Try it, figure out the idiosyncrasies, then move on to new ways to cause myself grief 🤠