If they'd use Opus I'd really appreciate it, hell, if I could even get interop, I have hacked together an app to pass the ZRTP codeword to my deskphone when Freeswitch terminates it and reencodes it as SRTP/TLS for it, since no deskphone vendor supports ZRTP.

Would make those that insist on ZRTP in my life a lot more convenient to have extended convos with.