[kortex]

> Running electrical, plumbing, air conditioning etc through this structure is doable but much harder

Have you seen architecture in like, any warm part of the world, especially Italy? Masonry/concrete techniques dominate.

If anything, this is far easier to integrate with utilities, since it can be incorporated into the 3D design.

It also seems easier to drill through than traditional masonry/concrete.

This technique is even more labor-saving than filling formwork with local materials, because formwork is very labor intensive, and you can't readily incorporate unusual utilities, windows, shapes, etc.