Earlier quoted context omitted.
If they're based on WebRTC then I believe end-to-end encryption is baked into the standard. Whether they use the standard completely is another question.
Articles ( http://www.theverge.com/2014/12/3/7325083/wire-chat-service-... ) suggest "end to end encryption for voice calls" and encryption to and from their servers for text, but I haven't seen anything about it being WebRTC (unless I missed that on the product's web site). I'm not sure that them having my messages unencrypted on their servers makes that feature any more desirable than Skype, WhatsApp and the like.…
yeah, not so much:
http://motherboard.vice.com/read/wire-built-by-ex-skype-empl...