I'm glad to announce that I have an alpha version that does mostly everything. You can grab it from here or just use the panel in the side frame.
To use it, just do:
java - jar skype2gmail-1.0.jar --mail
It will ask whatever it needs to synchronize. And you can also use as the following:
java - jar skype2gmail.jar --disk
It will dump all your messages to directory in the user home ($HOME/.skype2gmail/history).
Feel free to report any bugs or send any feature requests!