If he called you, you could have had him run to the Vantage panel, or if he was just so lazy, you could have added a 120v box, and used a scenepoint in lieu of the keypad and all is good.
We see this all of the time when they don't call , or want to spend a nickel more.
So if you turn off the lights from the keypad on the other side of the room, you still need to go to the toggle switch.

Bummer.