Balegor's Crusher and Devotions

Hello. Just a couple quick questions about Balegor’s Crusher.

100% pierce to acid conversion to Blood of Dreeg. From what I read, this is a global conversion when the buff is active?

Does it apply to the Blade Spirit? I don’t see a way to test what type of damage the spirit is doing.

Devotion questions:
I currently have Scorpion, Manticore, Rumor, bound to Shadow Strike, Blade Spirit, and Curse of Frailty respectively. Would you advise otherwise? General question left open in case I’m missing something. Grim Calc below for the ability I have, but that’s pretty much all the bindable skills I have since I got the Crusher.

I’m aware it’s glassy and mostly because I haven’t done resistances or life steal. Still shotgunning through normal and will fix that later. Changed from scourge slicers to this Crusher and respecced accordingly.

Thanks for any answers/tips.

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