Going to answer my own question...
ETA Prime on YouTube did a video with it and will have an additional review video in the near future. The thermal differences he found using the new Zero2 have been:
No Case @ 1.0 Ghz = 67.4c
No Case @ 1.3 Ghz Overclocked = 77.8c
Flirc Case @ 1.0 Ghz = 51.4c
Flirc Case @ 1.3 Ghz Overclocked = 68.3c
As you can see, the Flirc Case for the Zero works so well that it cools the Overclocked Zero2 down to non-overclocked thermals at standard clocks without a case. This is outstanding and I am looking forward to having my Zero2 use the Flirc case!