Missed opportunity/Bug Prospero's Protection

Hi GGG!

I was thinking about theorycrafting a spectral shield throw character, and I came across the new ring "Prospero's Protection".

It's worded that:

"Armour from equipped shield is doubled"

it does not appear to have any effect on the armour gained from the shield itself rather than just adding on the armour (global, not local). I'm guessing the wording: "armour FROM" makes it global rather than local? Am I correct on that? Just wanted to get some clarification, because that'd (in my opinion) make the ring more interesting to play around with.

Would've been very interesting to have something similar in the game, to give some love to our shield attackers.

Best regards,
//RymdLeif