W00T! James Roper was nice enough to explain the flaws in my
  understanding of the Iteratee/Enumeratee/Enumerator API and provide
  a nice clean example of how to express a Web Service call that
  honors "back pressure" and produces a result all with a solution
  that doesn't need to read the result all into memory, block or be
  bound to a single thread!

  THANK YOU James!