Yes if you use Photoshop or Gimp or any other image editor. You have to have skills though.
You can also combine simple renders with SU output for faster/non photo realistic/conceptual renders.
For instance, if you use any render engine you can render an image just with a/some light source(s) and mix it with SU output. If this light pass render is made only of matte white materials, glass and mirror, no sun, no sky(or black sky) it will be faster to clear than a full material render.
You can render multiple passes per view and mix them all in the image editor:
Light pass;
Specular pass;
Diffuse pass;
Etc.
Search on google for "tutorials render passes"