I have also started a Company Commander conversion. Merchant-General James Scrymgeour, commander of the 1st Sculfleet, is of the most noble lineage of Scrymgeour, and 5th in line to the throne. He weilds an imperial issue power fist, and a weapon of archaic design known as the "Gauntlet of Ferrus' Wrath". It is a Space Marine designed power fist which has had its power supply rerouted to a plasma conduit to provide him with a powerful, albeit unstable, ranged weapon. The Merchant-General gained this odd weapon while engaged in combat alongside Space Marines of the Hellions of Steel chapter. Sculfleet forces fought with such ferocity in battle, that the Hellions took many soldiers aboard their Battle Barges stationed in orbit for treatment. James, having had his left arm torn off by a Chaos Space Marine, recieved a mechanical transplant, the Gauntlet in question.
For some reason the pictures of the conversion came out really badly!