Just to be clear, are you talking about the Austeja armor set?
That armor set seems to be made specifically for auto-attack Chaplains (or evil Linkers), so I don’t believe Full Supports would want to pay too much attention to that set. This new armor set just seems to be one step forward in that direction, to be honest.
From what I’ve been testing in kTest, the current gearing IMC intended for auto-attack clerics (Karaliene Prideti set, Wind Ark, pure stats, etc), along with this new armor set, is pushing the ancient Chaplain-Priest combo back together, much more than Druid-Chaplain or Monk-Chaplain. From there, it is possible to make a Hybrid Support that heal and revive while being able to DPS via auto-attacks, such as Chant ARTs Chaplain-Priest-Crusader or Chaplain-Priest-Druid and so on.
To be honest, Chaplain-Priest with Crusader has its own novelty and fun, but of course, whether the build is practical or if the DPS from that is viable in the long run is a different question .