Gallen proved on Wednesday that the number on the back makes no difference.
Incidentally, Benji and Prince have also proved this, as both have always played more of a combined 5/8 / half game.
Perhaps some should consider that the traditional roles in league are becoming blurred.
This began with the disappearance of the traditional lock.
Now we have halves (1,6,7 and 9), forwards and outside backs.
The positions are largely interchangeable.
To say Ellis cane play at prop is like saying Petro cant play in the back row.
Of course Ellis can play at prop - just as Bronson Harrison was played at prop. The question is where does he play best.