Self hosting with `Content-Type: application/x-xpinstall`

Currently I have an extension that it distributed through self-hosting, specifically using the Content-Type: application/x-xpinstall MIME type. Is that compatible with Firefox for Android, or must it be distributed through AMO?

Firefox supports self-hosted add-on distribution, but in order to use this option the add-on must be signed by See Distributing an add-on yourself for details.