when I was writing my last novel draft using nuance dragon 15, it had the 'read that' command which would read the last phrase I inputted, but that wasnt enough since I had a wireless headset that let me wander the house talking to the computer, but still needed to see the screen to know if it got the dictation correctly.

I ended up fishing out a cheap $120 portable walmart windows laptop 2 in 1 and VNCing it into the desktop so i could see the screen, carrying that around with me worked.