That's true but I actually think his playing style suits it. Remember the guy is a centre masquerading as a winger, and the leap from centre to second row isn't huge. Chris McQueen was a winger.
I remember watching on FOX a day of Sharks games (pre-season) and in one of the Semi's against the Dog's I think we had Luke Stuart playing Centre and scored a runaway try. He went to South's and found himself at Prop soon after. In saying that I prefer Feki stay as an outside back.