@ilyess @signalapp true, but the value proposition was that, occasionally a correspondent _would_ have it and they'd get end-to-end encryption without doing anything special.

As soon as I tell someone they have to use two messaging apps and keep track of who's on which, their eyes glaze over.

One model has a snowball growth effect. The other has diminishing returns.

I have a tough time convincing IT professionals, and it hurts my credibility with everyone else, so I can't recommend it now.