I think you gain extra speed - extra kinetic energy to go through the tires in the braking zone, so I don't think it would make sense to not use DRS
Whats interesting to me is that Mercedes both looked suspect on the softs.....the SS will not be seen again this weekend and thats the only tire Mercedes has an advantage on..Mercedes Tires =Mercedes pole.
Obviously favoring Mercedes right there. As it was announced that Pirelli would change the tyres after Mercedes had asked for it, other teams complained and told they didn't have any problems with tyres. So why change it then if the majority was ok with the situation?