I’ve been using Ubuntu for several years, but recently came across openSUSE 11.4, which I like a lot.
The problem is that I have been using a lot of applications in the Gnome version of Ubuntu, some of which I would like to continue with in openSUSE. A critical app is the password manager, Gpass. Having searched around I cannot find a version of this which runs in openSUSE. If installing Gpass proves impossible, I would like to import all of my passwords into Kwallet, but don’t know if this can be done.
I will start at the other end of your question, Kwallet has an import function. It says XML there, but I do not know if other password managers have the same output format.
You do not say, but as you talk about using Kwallet, I guess that you use KDE on openSUE. Then Kwallet is imho the one to use, because it integrates with other KDE apps. FF is of course different, it has his own password manager.