The first thing I have decided to have a look at is the overlay hinges from salice and blum and currently the blum does a nice negative protrusion hinge actually -2.3mm.
But be aware that even when using the Blum Zero Protrusion Hinges, if the end user does not open the doors well beyond 90 degrees (they rarely do), the door backs get ruined by the pull outs. After doing them both ways, I think it is better to use your regular hinges and shim the pull outs to clear the doors.
