I’m starting to realize that I might have to abandon Opera as my first browser. I am very satsified with it, on Windows, but obviously I’m missing a lot of OS X-functionality with it.
But I’ve found a workaround thank’s to EagleFilers Import URL’s-command: When I view a page I want to save as a web archive in Opera, I mark the url, bring up Quicksilver and append that url to a txt-file called “to eaglefiler.txt”. I then open that file, copy all the url:s to the clipboard, enter EagleFiler and presses Cmd-L.
I’ll try this for a while, to see if that’s speedy enough.