I have a couple of ChIDs and an AGA set up with silica. I just run the wick vertically, the same as a ss mesh wick. Flavor is a bit muted with silica, but I think that ss wicks are a little overpowering flavorwise. Batteries last longer with silica.
The silica wicks seem to gunk up faster, but I don't get a tank of brown juice that I usually dump out, either. Need a middle ground.