This is sad news, Kevin was a huge inspiration. I adored his gear of war work and it was one of the first examples I’d seen of how z brush could be used on environment assets. RIP
Have you looked at Adobe's site? Tons of great resources to get you going: https://substance3d.adobe.com/tutorials?software=Substance%203D%20Designer As just one example: https://substance3d.adobe.com/tutorials/courses/creating-a-tudor-house-wall
There was an example posted somewhere within that Twitter thread- I can't find it, though. They showed the version the generator recreated as something akin to a messed up VHS tape- huge blocks of random colors and structural corruption
Both. You'll probably use vert paint, being cheap and effective way to blend materials, and probably masks, even if it's just a basic noise and gradient material function to break up vertex paint blending or height lerp from a height imput for example. Also don't forget decals on top of what ever solution you use.