First of all, yes, the Qubes-URL (or any outside URL for that matter) does work. "href" simply exists to reference to any source, either local or on another server.
Secondly, changed the "Wiki-Tab" on the top to link to our Mediawiki-Documentation. We may include something later. That was what I meant when I wrote whether there already exists some content for the "Quick-Start-Guide". Since this is just for the transition, I also linke the VBox-Download-Sections to the Wiki.
Have a nice day,