It's all about opinions.
So let's all agree he's a very handy player to have around. I believe in an emergency he can also play SH and even FB but I wouldn't want to push it.
I've said it before but I'll say it again, the day of the specialist player is disappearing and the universal soldier is here. Soon IMO it will be down to three main food groups. Runners, Wing and centre, Pivots, FB, Hooker, H/B's and perhaps LF and then the yardage makers, Props and Back rowers and all will be interchangeable within those groups.
This I believe is down to economics, lack of players and seemingly ever more injuries combined with a correct unwillingness to play injured players. I see squads dropping to as small as 26 plus Academy, allowing a smaller number of players to remain relatively well paid.
Might be wrong, just a thought.