I believe the source code for the Electrum fork is here:
https://github.com/eveybcd/electrumThe Electrum-BCD Releases are here:
https://github.com/eveybcd/electrum/releasesNote that this is the same github
account that holds the diamond "core" wallet as linked from the bitcoindiamond.org download page:
https://github.com/eveybcd/BitcoinDiamond/releases/download/v1.2.0/bitcoindiamond-1.2.0-win64-setup-unsigned.exe
As for the "trustworthiness" of this... I'm not going to tell you that it's "safe". Take adequate precautions (run it in a VM or on a liveboot Linux USB, empty the BTC addresses first etc) and you should be "OK"... but "
Use at your own risk" etc