I entered this info into the "issues" section of the repository, but found I was not registered there.
When initialy configuring Gargoyle as a client, the 'Scan' button will not perform a scan. Further exploration via command line found that the 'iwlist wlan0 scanning', would return an error stating that the device was busy. The only way that I could get the Scan button to work was to put a known ssid in the 'SSID to join' and then "Save Changes". After the connection was establihed, I could then Scan/Re-scan to my hearts content.
Environment:
Buffalo wzr-hp-g300nh, Gargoyle 1.3.14