Trust me, if it's chrome plated it'll rust. I used a Weber rib rack (meant for the BBQ) before I got my LipAVI rack (managed to get one from a seller on Amazon that shipped from the US).
Each and every time, it rusts from all of the weld points (coating your container and staining the end cap of your APC with rust.
Now, this was with ribs - 36 hour cook each time - you may get lucky if you're only using it for short cooks and thoroughly clean it after every use.
Edit: I also think @Ember is right - when you look at the other wire models, it's apparent that they're plastic coated wire. Not sure how well that'll hold up in the bath...you may have bits of plastic flying around (then the exposed wire will start to rust).