[Beandogg]

As an update....I mapped Endkey.exe to my power key (click) using Rhodium Keyboard Config, and it's great.

When you press power, it vibrates and locks.
When the screen is locked and you press power, the lock screen turns on without vibrating...that is, it doesn't just relock the screen. Rhodium keyboard config must be being overridden by the lock screen, which ends up being perfect.

Then if the lock screen is showing and you press power, the screen powers off. Media player keeps playing. The volume keys are locked unless windows media player is running.

All in all, it works perfectly, and I don't have to use LockDevice or Smartlock.