Hi Rod,
Its good to see someone with a structured sense on the subject.
Its easy enough to glue two sheets of plain mdf or chipboard together with plain old pva, just brush the glue out evenly on both faces and put it on a flat surface ang weight it down. (or use a small paint roller).
Melamine faced boards could be used, but sand the surface lightly to remove the glazing. Pva would probably still be very suitable as it sticks laminex down very well without the mess of contact adhesive. (Since discovering pva is suitable for laminate to substrate I haven't used contact adhesive for anything.)
Doubting Thomases may prefer to laminate melamine faced panels with a spray (for a smooth layer) contact adhesive.
Personally I prefer a separate router table and sawbench so I can use either tool without affecting whatever the other is setup for.