Hales is a very good ODI batsman, who was on excellent ODI form a year or two ago but has dipped a little since! Hales hs currently gone down 30 places or so! Ok, he has proved himself to be a decent limited overs bat, but adapting to Test cricket is something that only few can manage!!
To be fair, Warner has managed that ODI-> Test transformation fantastically well - something I didn't think Warner would adapt to!! But he is proving himself in the Test arena and is still playing limited overs stuff to a superb level.
Will be interested to see if Hales is given the nod. With Root, Vince, Robson, Westley, Bairstow and others around the possible England squad seemingly hitting runs for fun at the moment, Compton is looking on poor form and Hales gets a start but still not hitting any form.
So I would be surely looking at the likes of Robson, Bell, Westley and Vince to compete for the 2, 3 and 5 batting positions!