I was crawling though the Nvidia advanced render forum last night , because I am super cool and have fun things to do out of work time , and I realized that a new MDL library came out (about a year ago so glad im on the ball) with additional appearances that are pretty great especially for AEC applications.

I had not updated my library so I imagined that some others may want to as well , especially with the editing capabilites for MDL appearances in Viz 2020.

if you are interested see the below link to download the installer

https://www.nvidia.com/en-us/design-visualization/technologies/vmaterials/