I use the weathertech in all trucks but still buy a $20 horse type blanket to put under/around them.  Seems my muddy feet can always find the one 2" spot in an odd corner that isn't covered over and over again.  Usually right around the gas peddle hump area and then towards the back on the same side.

I did have one that had the damn lip corner curl just a touch on the Drivers side.  Every now and then I'd catch it with a boot and sling shot everything on the floor into my face.  Think I hit it with a heat gun to fix.