There is no point in people guessing what or how Pep might play,each game in the league has to be taken on it's own merits,like he has admitted,this is a new challenge,which will force him into new ideas,and thinking.
What he has done in the past (well last few seasons at Bayern) will have little bearing on us,unless we hit the ground running,and to be fair the first 3 games we have this season,with 2 being at home,should set us on our way,and give Pep an idea of how our league can be,before going to the swamp for a "anything can happen" match.
Even the old stubborn one played 2 up top on rare occasions,albeit in the wrong games mind,so we have got to see how it pans out first few games am afraid.