You can't start your reserve hooker. Well you can but it would be stupid to.
And no it's not obvious.
If Sio starts, say, against England there'll be a reserve LHP and hooker on the bench. Probably Slipper and TPN.
No. Sio plays in the 16 jersey, but comes on for Slipper at loosehead sometime between 55ish and 70 minutes depending on other factors. If the hooker then starts cramping, or gets injured or something, Toby comes on for the hooker and Sio switches one to the right.
Are you sure he can do that? Scrums went uncontested in SA v AB recently because the Bokke didn't have a designated replacement for one side or other of the scrum & I thought it then emerged that you have to name your reserve THP, LHP & hooker prior to kickoff & that once named for a particular position they can't come on in another. Never could find the relevant World Rugby reg online so relying on reports on the various rugby sites but that seemed to be the gist.
If it came to that I think Cheika would start Slipper and have Sio on the bench but I doubt that he'd avoid bringing Sio on to replace Slipper before maybe being required at hooker at a later point in the match.
If worst came to worst and Sio got injured one of the props could pack a scrum at hooker. None of our props are going to say they are unable to pack at hooker and require uncontested scrums without the requisite number of injuries.
Clearly it would be troublesome if the situation presented itself but people are talking about it as if it is a sure thing that Sio is going to end up playing a crucial game at hooker.
People are also talking about James Slipper as if he's a massive step down from Sio.
Worth noting that this situation has since been clarified by world rugby, and for the WC at least you do have to name specific positions for your replacement and starting front row. There's more info in the scrum thread on herePart of the law says this:
(d) A suitably trained and experienced front row forward may start the match in another position.
It seems they got things mixed up in that match. Teams don't have to stipulate on the team sheet which position a bench front rower is playing, onlyt that they are FR (Front Row).
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I think that if Moore or TPN is injured, then Hanson will be drafted into the squad. We'd only play Sio as reserve hooker if Moore or TPN was injured inside the 48 hour replacement window, and even then, it's unlikely he'd spend much time in the position, if any. He can be reserve hooker while playing in his usual position on the field. He can start at loosehead and still be the reserve hooker.
Having just read the rules this is a true and pertinent point. There just needs to be at least one other in the 23 who can cover hooker if the starter goes down, they don't have to be on the bench.
And he'd probably do it better then everyone else..Let Pocock do it. Mad bastard can do everything else.