Yes, the project owners (including myself) are concerned about the trusted cloud service model as well. That's just a sample, and we'd like to replace it with a

Yes, the project owners (including myself) are concerned about the trusted cloud service model as well. That's just a sample, and we'd like to replace it with a trustless model. NFC is looking good for key exchange between folks who are close enough to shake hands. I don't think the key signing parties that OpenPGP relies on will work for the typical end user, which is what IronPigeon is targeting.