Unfortunately this might be a little late, however, there is going to be a meshnet meetup at Open Source Bridge conference (http://opensourcebridge.org/ ) "Hacker Lounge." PersonalTelco (https://personaltelco.net/ ) will be there along with other conference attendees. The meeting will take place on Wednesday, June 25th, at 6:30 pm, although, not limited to that time. If you are interested in attending, you need to register for at least a Community Pass (http://opensourcebridge.org/attend ).
There is also going to be a session about mesh networking (http://opensourcebridge.org/sessions/1418 ) as a part of the conference on June 26, 2014 from 3:45 – 4:30pm.