I think pilif meant that you'd have to wait for the progress bar (about seven se...

I think pilif meant that you'd have to wait for the progress bar (about seven seconds) to finish before you noticed something was wrong. For example:

  "Call the Drake Hotel in Toronto."
  *bling* "Calling..."
  (wait seven seconds)
  "Hey, this is Drake. What's up?"

Versus what Siri does:

  "Call the Drake Hotel in Toronto."
  *bling* "Calling Drake Smith..."
  "No, wait! Stop!"

Think about using the voice commands when you can't see the device. Like when you're driving or running. It's useful to have the audible feedback in addition to whatever's displayed on the screen.