Did not do much real work during the weekend because of pre-christmas drinking with friends :-) But I've at least released a new version of FireQuery which finally supports Firebug 1.5 (in beta right now).
Firebug 1.5 support
Alternative jQuery version
You may specify alternative jQuery version by typing
about:config into browser URL:
extensions.firebug.firequery.jQueryURL key and change it to fit your needs. For example you may specify one of Google-hosted jQuery versions.