The sides of the truss rods covers are rounded on top and square on the other (under) side, also the screw heads are sunken into the top side.
So it would require some work and I'm not sure if you can sink the heads in on the other side without ruining the holes...
I think they put a coating over the cover now (both my two new Alembics have it, only on the front though)
If you have that side engraved, it has to be sanded off.
You could order a new cover, I don't recall exact figures (tend to forget that asap) but I don't think the engraving was too expensive and they know how to make it look stunning at the mothership!