Bob has hit the nail on the head.
Much like the Broncos, Sharks and Souths, we too have been employing the 3rd tight running prop, using Heighington, Ellis, Dwyer and Payten all to an extent. They pretty much play as another prop, however can shit a bit wider. Blokes like Corey Parker and Paul Gallen are the standouts at the position.
Whilst Dwyer is young and could definitely mould into one of those blokes, he could also be one of the more devastating wide running, hole hitting backrowers in the game.