Its not as soft but not harsh on my thumbs either. I feel much more in control because, you know how there's this indent in the top of the thumbstick, giving you an edge with much better traction while using the stick? This wears off on the normal ones super quickly, but the aluminum obviously holds up much better. Allows me to hold the stick forever without slipping.
I think this is what I got: https://de.aliexpress.com/item/1005009040332346.html