First very early alpha of qlproxy 3.3 is available. It contains implementation of custom blocking categories (like squid guard or dansguardian) applied to all policies at once. All your lovely custom blocking lists (one domain name per line) shoudl be directly usable in Diladele Web Safety. Please take a look and post issues!
The alpha can be downloaded from http://quintolabs.com/soon.php.
Diladele B.V. Dev Team