I shall await.
@Asura I'm sure you could convince some Tech-priests to create a weapon along those lines for her as a post-mission reward. Or, just get a chainfist built to human scale; that already has both a chainsword and a power field attached to it, and I believe it comes with a storm bolter attached to the wrist too. Maximised Melee Murder Mode, Activate.
@Asura Hey, if you want to make a Chainsword Maniac Dominion, I say go for it. Just bear in mind, Dominions also tend to bear specialised guns as well, and presumably use them when a chainsword won't cut it. And a storm bolter-toting ally is pretty neat, if I do say so myself.