I was referring to Hemingway relying on Kansas City Star style guide, where he began his career:
http://www.kcstar.com/hemingway/ehstarstyle.shtml
[edit] which is quite different than how Vonnegut writes
I think you managed to demonstrate precisely why concision is overrated. In your quest for concision you used an obscure reference to a facet of an author's literary career most of us were unaware of, thus completely obscuring your point and requiring further clarification.
When I'm receiving 100s of work emails per day, I would rather read an email written like it was from Ernest Hemingway than Kurt Vonnegut.
That's not what I'd call "quest for concision". It was a light-hearted comment.
I think you're trying to make a 'smart' reference but are confused. Overall, Vonnegut was generally at least as, or more concise; there is an entire page in _For Whom the Bell Tolls_ dwelling on the sweat on someone's brow.