Looks like Eric Rice is on that Connexion demo flight today. I took an SAS flight last month and found the Wifi to be great for most of the trip (there were times it dropped/got really slow). I walked through the plane and couldn’t find another person online, so I don’t think it was an issue of too many users.
Anyway, Connexion is an amazing technology that is going to really drive even more travel especially long flight which people really hate. I was doing VOIP and video conferencing on the flight and it was fine.