Mirroring (apache serverAlias) is a very usefull tool. We run many sites with only one script located. Each have different content, different web sites but one source script and database. This makes easy to manage the software when yo have 100 web sites.
But when ssl is used for a site which mirrors the main script site, it doesn't work.
SSL support for mirroring would be very usefull. Even if only for VPS.
(Older browsers without SNI support? Who cares...)