I have the Mopar and one-piece Weathertech. While the Mopar makes accessing the stow and go much easier, I found the multi-piece design didn't give me enough coverage and the mats tended to move around quite a bit. With the Weathertech, I use the Stow Assist button on both sides to fold the mat out of the way. It's a little cumbersome but, for me, the superior coverage of the Weathertech outweighs the stow and go inconvenience. Just my $.02.
2017 Pacifica Limited (Ordered 9/21/16 & Delivered10/28/16)
Velvet Red/Mocha - Advanced SafetyTec, Uconnect Theater & Sound, 20" Wheels, KeySense, Emergency Kit, Splash Guards, Interior Protection Package, Spare Tire