Tutorial KS 8.2 and Substance Painter

[MaverikMS2001]

Hello I´ve tried to import textures to Keyshot at described here:
https://docs.substance3d.com/spdoc/keyshot-144998414.html

The Problem is here that you can`t attache the secon advanced materials to a Label of the first. Here was a very good video on youtube:
https://www.youtube.com/watch?v=namgHhzM7lQ

In KS8 there is always a "third node". So i:ve tried this version (see attachment). Works OK but my question is:

1. Is this the best way ?
2. in Substance my material looks more metallic how can i archieve this in Keyshot
3. I saw a Video with Metallic Material ? Maybee there is a way with the dialectic node and
https://www.youtube.com/watch?v=CA7ZZJn9_2M

Thanks for your Help