@moonman The author(s) of # were the ones who appropriated (I love that word) the # encryption stuff (axolotl which became "the Signal protocol" or whatever?) onto !XMPP using the pubsub XEP for public keys. So no wonder their own client supports it .)

Gajim's plugin draft was written by Conversations developers too, so that was awesomely nice by them. I'm happy I have donated hard cash.