I have ceni installed on my Debian-wheezy. I just gave it a try and 
now remember I did it and reported to the list already.

     I just removed the SSID I was connected on from my wpa config, 
brought down then up wlan0 and launched ceni. It offers me two 
possibilities: Either scan and manage a connection to some available 
SSID, or configure wpa_supplicant for roaming, which means mess up with 
my already made config. If I select the last case, I am warned that, 
after that, I can use wpa_gui to enter new wifi stations. Therefore Ceni 
doesn't bring any value at all - at least to me, since I'm able to read 
a howto and edit a text file.

     Didier