I have that exact rack (Technically one of their "Sure-Fit" racks) for my 05 Access Cab. It's a really nice rack and is very very well built. I've loaded it up with probably more than I should, however, as an outdoor professional (sea/whitewater kayak guide/instructor) I need to carry large, heavy things on a regular basis for fairly long distances. I've also used it for lumber, ladders, etc, and it's been great.
The biggest downside for me was my cap. It has skirted sides (sides hang down below the bedrail) which is great for weather/water resistance, however meant that when I installed the rack, I needed to trim four slots for the rack supports to extend through. Other than that, and a large amount of foam weatherstripping, it was everything I needed. Yes it's a little on the heavy side (close to 200 lbs empty), but you would be hard pressed to put anything up there that would damage anything other than the powder coating. The only place mine has a little bit of rust is where I've worn through the powder coating on the top sides of the rails. The manufacturer recommends the occasional application of your preferred variety of spraypaint, but that never lasts too long.
Even after what I have said, I'm considering selling mine, as I've stepped up to a FWC, and try as I might, the two just won't play nice together. The rack does a lot of things really well, like carry heavy/cumbersome/large things. Having realized that my cap+rack combo weighed in at nearly 400 pounds, I came to the conclusion that in some cases less is more, especially with regards to weight vs utility. For me, being able to comfortably live out of my vehicle for extended periods of time is important. Living in the cap in periods of sustained bad weather just doesn't cut it. And perhaps the same will be true of the camper, but I'm willing to re-arrange and try something new for a while and experiment until I get it right. Instead of putting 4 kayaks, 2-3 bikes, a 14 foot inflatable raft, and a cargo box on my roof (like I did with the ladder rack), I'm now planning on just the 4 boats up top, bikes on a hitch carrier, and nix the cargo box and raft. For my purposes a Yakima rack seems like it's the way to go, so that's my next move. I hope there's a little bit of help jumbled in there somewhere...
Cheers,
West