I tested it over Effetre light ivory, silver wire, dichroic, TAG Deep Purple, Striking Color, Ekho, Clio, and Aurae. No compatibility problems. I'm kind of embarassed to show this photo because these were quick and dirty test beads. The bead on the left is Aether over reduced Clio. The bead on the right is Zephyr over reduced Clio.
I found Zephyr to be a little bit stiffer than Aether, but still soft and easy to melt. I would definitely buy it.