Since it's a new protocol, they will probably err on the side of blocking it until they figure out how to MITM it. (Recently had to deal with a client who said

Since it's a new protocol, they will probably err on the side of blocking it until they figure out how to MITM it. (Recently had to deal with a client who said nothing about MITMing our HTTPS, and a coworker who then installed a root cert for them anyway... really pissed me off.)