IMO he's one of the great genuine utilities in the game.
This is the way the game is heading, good players multi-tasking in key positions.
Like the kid at school who swum, they usually did well in all the strokes and meterages.
Its also the current policy of the wallabies-they have players training in all kinds of positions. Not just to cover injury but to help improve the players game awareness.
Say in water polo, all the players are expected to be able to swim, defend and score, even though in theory they have positions in settle into.
Sporting ambidextouness.
The days of unique specialisations are fading away.
Look at the way wingers are used these days to 10 or 20 years ago, theres also some pretty quick forwards in our game. I imagine some are faster and slinkier than some backs.