Well, now I'm glad I convinced most of my friends to install OTR. I do wish there were an XMPP-supporting instant messaging service with a good mobile app, though. Google Talk has gone to hell after it got turned into Hangouts...
Unfortunately, there just cannot be a good mobile client unless it supports push notifications, which requires server support, which XMPP doesn't have. The existing clients need to keep a connection open and take too much battery, sadly...