That's quicker than the default button which iOS uses natively. I can't understand why these buttons are used, especially when Activator is so damn good! For example I use a swipe from left to right across the bottom of my screen and i'm back to the first page of my SpringBoard. No virtual button to get in the way whilst I watch stupid video's on YouTube
Zephyr was one of my favorite tweaks of iOS 6 but now Activator can do all of these things.