Hey CFItillIDie,
How long have you been a CSIP and what airport do you fly out of. I left the airlines to be at home as a CSIP. Really enjoy flying the Cirrus and other high-performance GA birds. Cirrus says if you experience an engine driven pump failure the boost pump will not provide enough pressure to continue to run the engine.
Have you ever had a student shut the plane down and leave the boost pump on? I'm certain it would not create enough power for sustained flight, but I believe the engine would still be "operating" or turning over. The 4-6psi of fuel pressure just is not enough to create the power required to continue flight. That design is really for vapor suppression.