It's quite interesting program indeed. I have a sample setup where you can see what I mean. Just click on image below, and you'll get the larger picture. At the left there is simple schematic for some circuit. At the right, there is corresponding board-file.
Blue lines are where milling head is supposed to move.
This part of this document describes a little how I got it working and what was difficult etc. Today I got EMC's backslash settings configured. Seems that it can do pretty nice job, as you can see from this test-drawing made with just pencil as the tool. As you can see, after Z-axis was made more gently, better results could be achieved. I must test this further, but this seems very promising.