Just wanna point out for people using these custom drivers and kernel 3.12 with hybrid graphics. Turns out it handles both graphic chips own it's own, but it does need a little help. My laptop says it's using discrete but it's really using the integrated graphics. To make sure an application like Steam uses the discrete, just put "DRI_PRIME=1 /usr/bin/Steam" and it'll use the more powerful GPU.
I also enabled the Radeon power management and getting good temps. Just go into /etc/default/grub and edit the line to look like this.
Then run "sudo update-grub" and you'll have lower temps for your GPU, which is important for laptops.