Here is that Incubus test I promised. The metal parts are left over from my Raging Heroes Archon.
I used some plasticard to create the Klaive. The body and torso are from the standard Kabalite warrior kit. I was very glad that this test worked out, since some boxes of Kabal warriors had been generously donated to the cause. I may even substitute a small squad of these for the Archon court.
I still have one more extra head from that Raging Heroes figure, so I will be making one more of these using that bit. The rest will use various Kabal bits in different combinations.