Scratch-build rules, not proxies or stand-ins, homemade awesomeness. Here are three of the datasheets that I ave done up so far (the blank one is available for download at the GW site). First, Charion the 609th's medivac (medic's datasheet coming soon).
The Ciaphas Vanquisher was a smaller super-heavy designed for the Oden PDF, mainly used for (apocalyptic) street fights. I need to finish this guy.