If you're rockin Phils, the amount of tools needed are so minimal, you hardly notice them.(except for the folded spare tube bulging through your pocket)
I usually have a long 6mm allen key, 2 plastic tire levers, and a carbon fiber pump which is so light and small.(140 psi)

The bulging spare tube through the pocket is kind of a pain sometime so I have to bust out the big messenger backpack to carry everything in