Switch input language with Control + Shift on Mac OS X

Is it possible to create utility for Mac OS X 10.8 that will allow to set Control+Shift keys combination (or Control+Option, Option+Shift etc.) to switch input language? For some reason I didn't find a single utility that can provide this kind of functionality, which is very requested by many Windows->Mac switchers. Is it something not possible due to OS limitations?

I find a solution with keyboard Maestro editor ! You can record in a hot keys , action to change to a langage to an other . I have try it with F8 hot key for set US keyboard langage and F9 for French one , pretty fun !