Some small questions on Unholiness (Ermor and Ctis DT)

[tinkthank]

1. I have noticed that not ALL unholy priests are unable to preach -- there are those U1 guys I had spawn in Ermor SG, and they could preach. Are there any other Unholy Priests that can preach?

2. Speaking of those U-1 priests that spawned in SG -- they spawned *only* in enemy territories under my dominion. Was that a cooincidence, or is the only way to get these guys by getting enemy territories under my dominion?

3a. "Protection of the Sepulchre" and "Power of the S." supposedly affects all undead units on the battlefield, but I have clicked on a bunch of units (while playing SG) and have found some units unaffected by these spells; their neighbors will have higher MR or whatnot, but they wont. And these were NOT skellies or other units summoned after the spell was cast, but Legionairres or spirits or whatnot around from the start. Is this intentional, or a bug, or a display bug, or what?

3b. Blessings: these spells "unlock the power of an unholy troop" -- I am confused here as to Ctis vs. Ermor: Ermor gets UNholy troops (like Wailing Ladies or Knights of the Sepulchre), but I think Ctis DT only gets SACRED troops. Does the Unholy Version work on both? Does the unholy Version also work for, e.g., recruited human-type sacred units (like druids etc.)?
Or are these two different things? In DT Ctis, do I need a priest to bless the sacred troops and an unholy one to "unlock their powers" (whatever that is), or is for example "divine blessing" and "royal blessing" (the unholy Version) functionally identical? Or are they functionally identical, but differ only in scope (e.g. royal blessing blesses only if you are undead, while divine blessing blesses you if you are living OR dead)?

Thanks very much