Even after brushing off the handful of crashes and stability issues, being able to play one of the most demanding PC titles available on an otherwise low-power Ultrabook is a real treat. The performance-per-dollar is still extremely unfavorable leaving this solution appropriate for enthusiasts only.
https://www.notebookcheck.net/GeForce-RTX-2070-powered-XPS-13-can-run-Metro-Exodus-on-Ultra-settings-sort-of.413922.0.html
As I thought...TB3 could only run 1060 at full speed IIRC, almost useless.
There is something wrong with the game. On eGPU with 1060 I can run Division High at 50 fps, Division 2 at 30 fps, Exodus benchmark - whopping 6 fps.