My average SOT has never been above a hour since I’ve started working. Also, before S8 I always kept the display to “Adaptive Display” and had it set to Vivid ever since One UI devices came out. Now on my S23 as well, I keep it On as white looks white and not pale when it’s on Vivid and being a designer, I’m assured while I test something that the colors are accurate and as per the intent or expectation.

So, I think it’s up to everyone’s preference. If you use your device for long periods, it’s better for you to keep it on normal, however, Vivid for me provides more accuracy.

for looking through it. As a see-through device.

Looks safe enough to just get cuts on the skin. Would take more of your delicate handling and care murder the phone.