Animated cloths for block avatar

Hello,

How do you make a deformed/animated cloth for a block avatar ?

I want to rig correctly a cloth that can be deformed.
image

I know how to do so in Blender, for Unity or any GameEngine. But Roblox have some constraints which makes it different.
I saw this tutorial : https://create.roblox.com/docs/fr-fr/art/accessories/creating

But like all the others it seems like animated clothes are only done by people who want an classic humanoid. The result will be adapted for a block avatar though.

And that’s my main concern, if I do the cage with the block avatar… is it going to behave correctly? Or it is going to think that the cage I made was for a default humanoid avatar ? So it will broke the result on a block avatar.

Thanks !