I had one in my FX4, had to repair it twice due to cracking along the back side where it latches to the side of the bed (I repaired with a support brace and nuts, bolts & washers). It also broke at the hinge (the pin) and had to replace that which was pricey because it required you to purchase the entire mounting assembly. I had about 50-75lbs worth of gear (tools straps, etc., etc..) in it. Overall I was disappointed in the build and material quality!
Obviously, I don't plan to get one for the trail boss!