I should just go all out and play Chaos really. Several people have mentioned it. I wouldn't have to kitbash horns on my dudes; they come ready made. But where's the fun in that?
I'm a contrary git when you get right down to it. I often have a perverse desire to do the opposite of what I'm told and sometimes cut my nose off just to spite my face.
"Heretek is the name given by the Adeptus Mechanicus to those Tech-priests who turn their backs on the teachings and strictures of the Cult Mechanicus in pursuit of usually dark and forbidden technologies linked to the Warp and the Ruinous Powers of Chaos" according to Google.
I returned from a family visit to the UK this week with my sons. This year produced a reasonable haul of plastic for Christmas, including 2 Lord Discordant kits.