running the same setup.... yes the OEM plastic mat covers the entire area as wellI have both the Toyota cargo mat and a Weathertech over it. The oem mat looks good, and fits the entire cargo floor. However it's made of a similar 'carpet' material as the floors, and while rugged, it holds little pieces of stuff (leaves, grass, splinters) in the fabric which are a real pita to vacuum out.
If you're gonna haul cruddy stuff get a Husky or Weathertech, but I like having both.
Yeah wasn't sure which the OP was looking for. We have it for the sliding deck and I can grab some pics if needed.