I might not play this guy in anything but tournaments depending on how it turns out. My plan is to use the other SG body in games until I finish my Nurgle Plague Grinder. That will give me two of these torsos and one I made myself, so I'll be able to switch them out accordingly.
A friend of mine suggested making a seperate base to turn the third body into a Daemon Prince. I'm not sure how I could accomplish this, but it sounds intriguing. It would at least add to the options of the army :)