Nick, it looks like you have two ready and eager testers!
David, what are you setting up your environment for? I'm doing ours for our Homeowners Association, planning on using CiviCRM for automating annual fee collection and getting rid of our lame property management company. I want to use CB to add new user fields so that we can use this module to have the residents maintain their own data and sync it into CiviCRM. If that doesn't work I'll have to install Pentaho Kettle to do the work, but that's a bit of overkill. Also using a few other apps to round things out.
For the record, my current versions are: Joomla 3.5.1, CB 2.0.14, CiviCRM 4.7.8 - these are the latest versions as of June 15, 2016.