The clinical thing is part of the appeal to me, at least in terms of drafting. Still, I assume a good script, or treatment rather, should flow and be a pleasant to read. Heard people argue that Cormac McCarthy's work translates well to films because he's using some kind of hybrid style. Like the whole first part of Blood Meridian goes like:

"See the child. He's pale and thin. He wears a thin and ragged linen shirt. He stokes the scullery fire."

I'm paraphrasing the opening from memory. He changes it up later on, but anyhow. Is probably the best example I know for being both clinical and poetic.