Two monitors at the same time with native resolution

Hi there,

I have a notebook with integrated monitor, DFP-0 and have connected an external HDMI monitor, DFP-1.

My goal is to run both monitors at the same time each whith its native resolution, 1600x900 on DFP-0 and 1920x1080 at DFP-1.

In such a way, when I press e.g. alt-ctrl-f6 and see the internal DFP-0 and when press alt-ctrl-f7 get my desktop on DFP-1, again, on each X server with its native resolution.

Is this possible to do, after all?

Currently I use TwinView in a way, my external HDMI is primary, this is my current config:

http://pastebin.com/7jsGdVfy

Is it possible to achieve this goal?
Thanx