Kowa TSN-553: It's no ATS 65.
The Kowa TSN-553 is definitely a cool little scope, but I'm hard pressed to say I would give up my Swarovski ATS 20-60x65mm (2021). Aside from the Kowa feeling less robust, I can just plain see things more easily at a distance with the Swarovski ATS at the same magnification.
Now if you start talking about using lighter weight heads and tripods, that's a different story.
I am going to investigate using an Outdoorsmans Pan Head vs the Swarovski CTH head that I have now, and will report back.
Still evaluating for now...