I had proposed at our recent NA Reps Meeting to investigate having a ZNC instance for Mozillians to use. Currently MoCo has a ZNC instance going on people.mozilla.org which some staff have found very useful.
With some many Mozillians living in areas with poor connectivity a bouncer would help them having a steadier connection to IRC in that if they drop they will still get messages and will allow those of us with good connections to get messages when were offline.
I personally have been using ZNC for some years and its allowed me to spend less time on IRC especially with support for push notifications.