Firefox Web Apps

From version 16 Firefox supports installing Web Apps from the Firefox Marketplace, which may break portability.
In contrast to Add-ons, the Apps are installed on Windows as an .exe launcher with its own folder in the Windows program data directory. When installing an app, Firefox also creates a desktop and Start menu shortcut as well as an entry in the list of installed programs.
Will there be a way to make those apps also portable, or is the only way not to use that feature?

Regards,
Leon