Because VBScript is only available on the Windows platform, this object has limited use in portable applications.
You might find it useful in an intranet scenario where you have total control over which browsers are deployed to the users. In that case, you know that your pages will be viewed on a compatible platform and can happily use this object with impunity.
Because the Visual Basic interpreter is only available on a limited number of platforms, this functionality is likely to be limited only to those pages that need to work on the MSIE browser in a Windows environment. This technique is unlikely to work in any other context.