Yosemite’s Speakable Scripts
In Yosemite, Speakable Items are gone. Their functionality has been merged with the Dictation architecture of the OS and morphed into a new feature called Dictation Commands. But unlike Speakable Items, Dictation Commands are not separate from the rest of the speech architecture. Turn on Dictation and you automatically gain access to Dictation Commands. At any time—even during a dictation session—you can speak the title of a command to have it recognized and executed.
[…]
When you launch the Automator application in Yosemite, the workflow template chooser offers a new option: Dictation Command. Using this new workflow template you can create a system Dictation Command that automates any process or task that Automator is capable of performing.
It seems the scripts are run not as the streamlined items that they are but are instead sort of wrapped in an automator action and run. It’s nice that you don’t have to go out of your way to translate a script into an Automator Workflow, but unfortunately this means that “Speakable Scripts” do put up the little Automator gear icon in the menu bar, and are probably ultimately slowed down at least a bit by being run as a full-on workflow.
I wonder if saving a script as an application would work any better.
Update (2014-10-19): Daniel Jalkut:
Wait a minute, maybe it is running them as native scripts. There’s just a change on OS X Yosemite with how the system runs scripts, such that they always show an Automator-style progress indicator in the menu bar. I find this pretty irksome as a default behavior because for example short-lived scripts don’t need progress to be indicated at all.