I’ve got the iKamper XCamp on the KB VooDoo bedrack. I’ve been very happy with it. I do some fairly rough off roading in Colorado so I’ve been impressed by how well the VooDoo has held up. The only thing to know is that you need v1 of the mounting brackets for the iKamper. The v2 backets won’t fit due to the thickness of the VooDoo’s crossbars.
The iKamper has been fun. It’s fairly easy to setup. It’s pretty solid in high winds too. But you MUST get the insulation blankets when camping in the Colorado mountains. We froze our butts off a few times, even when camping in July and August. I’m getting the insulation this spring and perhaps investing in a diesel heater. The only other thing is the connection bracket on my iKamper ladder. It broke so I’m looking to replace it.