I am in the process of converting http://bash.zone to IPB. I have setup a test site running v5 beta2. If you want play around with it feel free. The data that I import will be wiped out when I do the final conversion when 5.0 is done.
If you would like admin access let me know. I'll set up a test admin account and pm you details if you like.
Site is at http://ipb.bash.zone