I saw a fair bit of Scott Porter last year. He was playing in the Carlton League (Wollongong comp) for Wollongong uni who were a weak team. He was a class above that comp and with his headgear looks like a poor mans Jonathan Thurston for mine. He has a decent kicking game, decent passing game but he can run the ball and sniff out a try. He is also a very good support player.
Keep in mind that this was all witnessed in a comp that might as well be played on another planet such is the difference in standard to NRL so he may be over-awed come Saturday.
With regards to Orcher, the coaching staff have real concerns about his ability to handle the big hits and attention in defence that he will get. He struggles in NYC and admits it, so the NRL might be a bit of a ways off.