Vitality has 100% increased mana reservation efficiency - not working if linked to Arrogance

I have level 15 Vitality linked to Arrogance Support. It reserves 368 life.
After picking "Vitality has 100% increased mana reservation efficiency" mastery absolutely nothing changes and reserved life stays 368.

My understanding is that 100% reservation efficiency means 368 would be reduced to 184 (368/2).

Please check/fix or explain what's happening.

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mana reservation efficiency

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reserved life

They reworked that part of reserve mechanics in 3.14 when they introduced all the life-based skills. Anything that specifies mana reserve no longer applies to life reserve. Some reserve mods were changed to just be generic, but quite a few still specify mana.

For example, the tree passives up top of Templar still specify mana. But the ones between Marauder and Duelist don't.

Just about everything on the passive tree is mana reservation only.

The only exceptions i can think of is the reservation mastery 30% life, meaning prism guardian shield can only get 55% reservation efficiency for the socketed gems, or just enough to equip 3x50% auras and have ~13% life left over.

Equipment is about 50/50 between mana reservation and generic reservation.

**edit**

Oh, and champion of the cause aura cluster is 16% increased reservation efficiency (generic 8% x2) while all the other clusters are mana only. If you can reach it (or enchant it), it helps a lot.

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0000 wrote:

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mana reservation efficiency

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reserved life

I am ofc aware of this but it simply doesn't look right to me and the way I see it should work is - moving the skill reservation from mana to life (via Arrogance) should take the actual/present/final/resulting mana number, after #% reduced Reservation of Skills is already applied...

And 100% mana efficiency reservation is the same as #% reduced Reservation. In this case 50%.

From Wiki (Arrogance Support):
The mana reservation of any skill (aura, herald, aspect, banner, stance, Summon Skitterbots etc) supported by this gem will be paid with life instead of mana.
The mana reservation will still be calculated normally – #% reduced Reservation of Skills and other similar modifiers will still apply, but the RESULTING reservation will be paid with life.

I.e. Vitality (368 mana) -> 100% efficiency reservation -> 184 mana -> Arrogance -> 184 life.

But English is not my native and I might interpret the above incorrectly.

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Jinxxxed wrote:

And 100% mana efficiency reservation is the same as #% reduced Reservation. In this case 50%.

Only if you are reserving with mana. Reduced/less mana reserve stopped working with life reservation in 3.14. Mana reservation efficiency won't work with it either.

And Arrogance also has the double-whammy of a high reservation multiplier. So you're losing that Vitality mana efficiency mastery by reserving life instead of mana, and then you're having the life reserve cost at least doubled from Arrogance on top of that.

You have to look into other options that don't specify mana if you want to reduce that cost.

I see. Thanks.