Has anyone used or have any feedback on these? I have talked to Doug a couple times and he speaks very highly of them - as in SLC quality glass.

Anything to report good or bad? Hows the IPD Distance? (I have a narrow IPD)

Why don't you call GPO and ask them.

Some reviews of the 8 x 42 on Amazon, FWIW.

https://www.amazon.com/GPO-German-Precision-Optics-Lightweight/dp/B06WWR18V7/ref=sr_1_10?crid=DVYH5P1S84JI&keywords=gpo+passion+hd+10x42&qid=1685566125&sprefix=gpo+passion+hd+10x42%2Caps%2C364&sr=8-10&ufe=app_do%3Aamzn1.fos.ac2169a1-b668-44b9-8bd0-5ec63b24bcb5

This links to the ED not the superior HD's

I have used the 8.5x50's and the 8x42's both in the HD version and I think they are really good. Eyecups may be my favorite of any Bino. I have the 10-50RF's as well and I have compared them several times with my Zeiss 8x56RF's.

Sorry no experience with the 10x42's. When I go 10x or up in Bino I pull out my Swaro 10x56HD's.

Best of Luck

GPO specs list an IPD of 57-75mm.
https://gpo-usa.com/product/passion-hd-10x42/

The Zeiss Conquest 10x42 HD lists an IPD of 54-74mm. A friend chose to use the Zeiss because of the smaller IPD.
https://www.zeiss.com/consumer-prod...quest-hd/conquest-hd-10x42.html#features