The Mopar one was on my rig when I bought it.
Function and sealing are great.
The only knock is that it does not have any type of prop rod to hold when all sections are folded up. It would essentially lean against the back of the roof.
Hooked up my motorcycle trailer to go rescue a friend that ended up with a flat on his bike while riding down the interstate.
I wasn't expecting the huge drop in mileage, but it pulled as expected.