advantage is that if the script uses only ScriptUI features, it will
never need to launch InDesign. Additionally, it is possible to package
it that way with a special icon that appears if it is placed on the
desktop, and when it runs the icon appears in the taskbar.
An example of what I'd look to achieve is the hyphenchecker script,
written by the late Teus de Jong. There is one Windows-only version
available on his website (which is still being maintained, probably by
his son) which is an .exe file -- precisely what I'm trying to do.
however you can use, i think, Visual Basic (not vbScript!!) as a wrapper for js (using doScript)?