Trying to call for an action. Vertical vs Horizontal

I am trying to follow the concept I found here:

http://designmodo.com/cta-button/

I am not sure if I am biased or it is just really not calling my attention. I made 2 versions of it and here are the results:

At first I would like not to use buttons at all and make the 2 div a link/button instead but I am having problem on how to make them look clickable. Maybe making it 3d by elevating them? Borders?