My Epic was defretted by a builder in The Hague, Peer Dellen. The fretlines are blackened maple.
One thing you might tell the builder is that they take a good look at the nut, because it is much too high for a fretless. What they must NOT do is to simply remove the base plate. In the end, I gave the bass to Edwin van Huik to shave off a couple of millimeters from the bottom of the nut itself (not the base plate).
And the last thing, which they'll probably forget, is to tighten all three bolts.
Epic and Orion are basically the same instrument. You'll notice that the tone of voice is much the same after defretting - just a different sort of articulation.
Enjoy!