CentOS - Oct 2013 - anyone running both GTK 2 and 3 ?

I really love Centos.

I loaded Ubuntu last night on another drive and booted from that because 
I want to develop an application to run on a tablet and GTK 3 seems like 
a better route for a touch screen device.

However I really hated Ubuntu and I was so happy to get back to Centos 
on my first drive. I want to use GTK 2.0 / Gnome 2 for my daily desktop.

I would however like to develop using GTK 3 for the tablet application.

I thought I would ask if anyone has loaded both GTK 2 and 3 on their 
Centos machine before I hose mine :)

Any advice on how to do this?

-Patrick