Some guys grow a leg playing tests, others don't.
Which is why Horne is in. He is a 100% player in tests. As is Ant, McCabe, and AAC (Adam Ashley-Cooper). JOC (James O'Connor), Beale, Barnes, Cooper, Ioane, Mitchell, Genia, all these players give 100%.
They are match hardened and have proven ability to mix it with the best rugby players in rugby, and therefore always factor highly in any consideration for a team. To knock any one of them out won't be easy. Blooding players is crucial but it usually happens as a result of injury.
I don't believe for a second Deans put Vuna in to 'develop' him. I doubt he would be in if Tomane was fit. The way to convert opportunities into tries with our midfield is to have lightning wingers ready to pounce.
Right now we just don't have available a Mitchell, Cooper, JOC (James O'Connor) or Beale or clearly Vuna would not be in the 15 and would be unlikely to get a shot on the bench.
As an aside I'd just like to reiterate how much I liked AAC (Adam Ashley-Cooper) at fullback.
My mouth waters at the thought of our backline. In a few months we will all be debating furiously Cooper at 10 or not, does Cooper play 10/15 with Beale or play traditional 10 and let Beale do his thing. Will AAC (Adam Ashley-Cooper) play 13 or JOC (James O'Connor)? Thats a stir of course, but I see it potentially happening. Many debates to come!
Meanwhile Vuna has a shot. I think he will do well. I think Horne will do well. Simmons I am not so sold on, I hope he proves me wrong. For me he fails the 100% test.