The race lead at this point isn't going to have any impact on the final outcome anyway, although I guess it's always nice for someone to get to wear the leader's jersey even for a day.
And today's stage is going to really shake up the leadership race - the finish is incredibly steep. Having heard Sky's DS talking about Henao and Porte actually being co-leaders in this one, I am going to go for Henao today - the finale is made for him, if he's being allowed to go for it. The main man will be Contador of course, and we will really get to see his form right now. And of course, several of the main Basque riders will be giving everything for it too.