Forgotten about your desire to print these. Overhangs?
Though currently, you could split it top to bottom by front and back I think. making flat a base, and perfectly printable mild overhangs from a sound foundation. If you drill, Boolean, a couple of holes in the flat created by halving you can use then to put a ‘pin’ in and guide and reinforce accurate gluing of the print halves.
I also expect it will currently print faceted, need much higher poly for smooth print if that is wanted.