Went well. I played against Imperial Knights on Saturday in a narrative vigilus mission, Necrons on Sunday in a chapter approved matched play eternal war mission and won both games. It was a lot of fun using Divine Guidance and Holy Trinity on the melta dominions, and the Exorcists pulled more than their weight. Both games I managed to charge with the arcos and use the extremis trigger word strat, too. In the first game those 81 attacks were enough to kill an Armiger, while in the second it killed the majority of a Wraith unit. Celestine and seraphim are still great friends, and The Passion on Celestine is just disgusting. Both games I managed to charge with at least one penitent engine as well, which was great but not for the reasons you'd expect: the large base and double activation means you get an extra 12" of movement during the fight phase with which you an orbit an enemy unit and tie up more stuff. So that was a huge help.
I think the biggest misconception about the new dex is about the impact of the vessel strat. I see its value but had no efficient opportunities to use it because to play the missions I had to spread out across the board. The strat is only useful if the mission doesn't punish you for death-starring your army. And even then you need to have a pretty spammy list, so that everyone can make the most of the same faith power.
Bloody Rose order is a clear winner. It amped up my canoness and even allowed regular sisters to kill a unit of necron scarabs after being charged. I got too aggressive with some sisters against necron warriors, but the potential is still there. Argent Shroud didn't proc once in either game, so I might replace that one with 6+ FNP for my Exorcists just to be annoying. The +1 to faith checks order is great for the Doms and Seraphim though.