Since 2007, I've logged thousands of miles transporting motorcycles with the MX Hauler. Not a single bike has fallen off yet. The unit is solidly built and clearly designed to last a good long time. It comes with threaded inserts for use with sway-reducing hitch pins. The extra-sturdy construction means the MX Hauler is a bit heavy to carry to and from the vehicle and its storage location. With the gas can rack attached, it's also awkward to handle.
By its nature, the MX Hauler will affect access to the rear of a vehicle, sometimes with or without a bike attached. On my Blazer, the spare tire had to be removed before I could load a motorcycle. I tried a 6-inch hitch extender to gain some clearance around the tire, but the extra leverage made the rear end sag more than I preferred. The carrier also swayed more, even when using sway-reducing hitch pins on both ends of the receiver tube extension. I could still pop open the rear window of my Blazer with a bike on board, but the tailgate had to stay closed - even without a bike on the carrier. On the Pacifica, the rear door couldn't be used and the backup sensors had to be shut off because they always thought I was about to run into something.
Regardless of the vehicle, the MX Hauler will affect ride characteristics. My Blazer sagged a couple inches in the rear, amplifying every bump and turn. Our Pacifica minivan handled the MX Hauler like a champ.
On the law enforcement side of things, the MX Hauler almost completely conceals the license plate. With a bike attached, the taillights can also be obscured, depending on the vehicle. But over the years and miles, "the man" had many opportunities to get to know me and my MX Hauler but took a pass each time.
The two most significant weaknesses of the MX Hauler could be fixed, for the most part.
The first are wing nuts securing the foot peg pins. These tended to loosen during drives, even with the supplied lock washers. Wing nuts were chosen as fasteners to ensure the MX Hauler can be operated tool-free. I don't mind tools, so I swapped the wing nuts for lock nuts and a cordless impact wrench.
The second weakness is the ability of the motorcycle to pivot around the foot peg pins. Over certain bumps, the bike would teeter-tooter, with the pins acting as the seesaw pivot point. I rigged up a turnbuckle, shown in the photos at the top of this page, to reduce the seesaw effect.