Download
https://dl.dropboxusercontent.com/u/4265900/Alfred/Sleep%20Display.alfredworkflow
This workflow puts only the display to sleep, using the Keyword sleepdisplay. The system remains running until computer sleep is triggered, as specified in the Mac Energy Saver preference pane. Handy for quickly and easily locking your computer, if your job requires that sort of thing.
Unfortunately, there is no way to target the Eject key via AppleScript (that I know of, anyways), so the extension requires the use of the SleepDisplay.app (the extension looks for it in the ~/Applications/Utilities directory). As Alfred leans the Keyword, the Extension becomes easier to trigger. For me, all I have to do is type, "sl" to trigger, much more convenient than the ⌃+⇧+⏏ keyboard shortcut claw, I think!
Dependencies
SleepDisplay.app (install into ~/Applications/Utilities)
Download
https://dl.dropboxusercontent.com/u/4265900/Alfred/Sleep%20Display.alfredworkflow