It would likely be overridden by the Eververse Ornament. There should be a seperate slot for Ornaments and Glows though, since the Drained and Renewed set will be ornaments for Solstice Armor 2.0 as well as being able to activate a glow.
There's not enough information regarding this yet. It's possible that the Eververse (and other) ornaments will occupy the same slot as the glow(s), so in that case it would mean they can't be applied at the same time. Just need to wait and see.