Default [Q] Google now screen

Hi.

On pure Android 4.4.2, like CyanogenMOD 11 or nexus phones, when you swype all the way to the left you get to a google now screen.

Is there a way to add this very same screen, to be accessed on this very same way to the stock Android 4.4.2 from Samsung?

If not, is there a way to install Google Now Launcher on this phone? This is not the Google Now version, I'm not looking to make it a google now version due to some (few) things that I like on Touchwiz, like the multi screen, and don't want to lose some apps, like the shealth.

Btw, no root installed yet.

Thank you.