Is the sheod close to the same thing as snapping?

[Jillian]

Curious, 

When a person on sel go through the sheod is it the same thing or close to it as snapping? Are there any attributes or characteristics in the person's soul that enables them to receive the power from the Dor? Like in mistborn they snap and receive the powers and Brandon has mentioned how it' like a cut in their soul some kind of damage that allows the power to fill in which is why it is like torture process to actually snap? What if it is like the same kind of thing but not where the soul has to be broken to "snap" to go through the sheod?

[Weltall]

Welcome to the Shard!

Snapping and the Shaod are local terms for the broad Cosmere process that Khriss calls Initiation, essentially how one becomes able to use a given magical system. We know the specifics of some systems (for allomancy you need the right sDNA and then some event that causes you to 'snap' and reach out to Preservation's power, for Surgebinding you need to act in a certain way in order to form a bond with a spren etc.) but Khriss admits that even she isn't sure exactly how it works for AonDor.

Given that all the systems we know specifics of require the user to act in some way in accordance with the intent of the Shard that powers the magic, it's more or less certain that access to AonDor requires one to express Devotion in some way before the power of the Dor will enter them, possibly with a bit of Dominion as well since the Dor consists of both Shards, though AonDor is noted to be more Devotion-leaning so it's probably where most of the emphasis would go.