Silence exit delay and armed announcement on demand

When I leave for work early and the Mrs is still asleep, it would be great if I could arm the alarm without waking her.I've been thinking how I wish there were a way to silence the exit delay and arming announcment from the keypad but only on demand basis. Typically during the day we want to hear these announcements, but in the above example it would be perfect for a silent arming.Please let us know if this can be implimented soon!