I'm not certain Folau actually wants to play 13.
In 12 months time, when Folau's management team weighs up the offers from League, French Rugby, the NFL and NASA they will leverage off how the current employer has treated one of the biggest stars in the game - has it accommodated Folau's development and/or aspirations (regardless of how frivilous)? Or can they claim it has pocketed him into a role without the chance to "grow as a player" ie. to try something new?
I think this is all about leverage at negotiation time, and the smartest man in the room saw it for what it was - and said "yeah, for sure we'll be giving it a go... sometime". Cheika's no dummy, he knows how difficult it will be to keep Folau and he knows what unscrupulous agents will do to get an advantage. Got to fight unscrupulous with vague promises...
I love Folau's exciting attributes, though still cringe when he's asked to show basic rugby skills like how/when to present at the bottom of a ruck, how to set up a winger (like a number 13 should), and when not to try the 50:50 ball - he turns over a lot of possession. That his kicking is poor is irrelevant, both Tahs and Wallabies play ball-in-hand and the Tahs got away with an emphatic title with non-kicking Alofa, Horne and Folau at the back.
He is a commodity to be exploited until either we can replace it, or no longer afford it. Winning kick offs, highballs, 1-on-1 encounters, and returning kicks and running off inside backs (et al) with the proficiency he does - added to his clean image and happy nature - I say let's appreciate him till the RWC and find us some new (affordable) heroes then. I'd say actually trying him at 13 would be disastrous, and if AAC (Adam Ashley-Cooper) or TK broke down I'd use Horne well before Folau anyway.
However - if he wants to commit to Aus rugby now, give the guy a go!
Ps. I reckon we're going to see cross field kicking to Folau (with 1-2 backs hanging back as defensive cover) used as an attacking option - maybe one or two in the back half of the Super Rugby season and then as an attacking weapon in the latter stages of the RWC. It was his bread and butter back at the NRL - but Cheika's not going to let oppositions defuse it just yet...
I fucking abhors cross-field kicking to score tries (ie. NRL), though will take the RWC by any means possible! I still need revenge on a pommie bastard who sent me a puzzle in the post, which when assembled made an A3-sized picture of Martin Johnson holding the RWC aloft - I'm just grateful he didn't find a picture of Sheperdson's scrummaging in the 2007 QF... If anyone has a high-res pic of Farr-Jones lifting Bill in front of HRH, please send it through...