Yes, I agree. Part of walkable should include work where possible.
I have lived a scenario similar to the one we are sketching out here and it was great! Live, work, play... I also had the airport available. Could walk out my front door and end up on the other coast that same day.
The documentary "The End of Suburbia" talked about this possibility:
https://www.youtube.com/watch?v=Q3uvzcY2Xug