Comment 2 for bug 297634

There's no way to predict how other iso's are set up. Even though most are similar, there can still be small differences. I don't believe it's just a matter of copying the iso and some boot code to the usb disk, usb-creator is actually extracting specific files from the iso. It would need to know the structure of each particular OS in order to support it. Right now, it doesn't even support the server edition of Ubuntu, let alone a completely separate distribution. I do not think this request would be sufficiently useful, especially since most other distributions already provide their own way to accomplish the same task.