On a similarly related note... if you want to play a Knight of the Cross/Sword and keep the canon intact, it would be simple to have a blade forged with a piece of the True Cross in the handle. That, in my GMs brain, would be more than enough "oomph" to power a Sword of the Cross. In that manner, you could build a PC as a Knight of the Cross and not mess with the canon. After all, there are THIRTY Nickelheads. Makes sense that the Powers of Good would even the odds a little.