They say a lot about using it with suspension but part of the thing with a suspension is suspending as much as possible of the load - they mention a pending pannier friendly design but I have difficulty imagining that suspension function would not be compromised by adding a lot of weight to the moving parts of the suspension arms.
The system itself weighs about 2 lbs for the rack, but if you put 20 pounds in panniers attached to it, rather than to the suspended parts of the frame, every time you go over a rock, rather than having to displace the wheel and fork lowers and compress the air in the fork, you have to add the weight of the rack and load to that - which is probably 5x the weight of the wheel and fork lowers.
Maybe it doesn't work out this way and you can't feel it in the real world - would be curious to hear from folks who've tried the OMM racks that attach to the rear triangle on a suspended bike and loaded them up for camping. (Of course all of this is irrelevant to the OP's question...)
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