On an ICF/EPS structure, is it better to apply an acrylic stucco or Portland based conventional stucco?

There is a product called “U-Stucco” and it’s conventional stucco but contains fibers in it like they put in concrete to help with cracks. It looks like a decent product but haven’t seen or heard of any firsthand reviews. They claim a R2.2 when applied at 1″ thickness. Not sure how they derive that but that’s the claim.

https://u-stucco.com/ustucco-hpx

Either synthetic or conventional, I would use a fiberglass mesh (4.5 ounce or greater) to help prevent cracking.