Just to confirm, my little key works lovely with the aul Quannie! In fact, using a spring-based, flexible stereo plug seems to help with letting it rest nicely on the exposed rubber jack cover without causing strain or having to adjust the rubber like you do with the Ali Express paddle that everyone seems to be using presently (including myself).
I am running IJV Mod 2.95 here and also performed the internal mod, removing a resistor and wiring in a small jumper cable. Fiddly but it does work!
Thank you to UA6HJQ, whoever you are and wherever you are, for your original design and inspiring me to adapt it and make my own little key. I hope other folks enjoy it too. 
P.S. Yes, that is a genuine Nagoya before anyone asks! 
