i've been daily driving Asahi on M2 for months and it's awesome, but not all drivers are done, sound in particular and sleep modes seem not complete. neither matter to me personally for daily driving.

How is the battery-life? Is it comparable to MacOS? What kind of issues about sound and in general are the most annoying from the end-user perspective?

it's long, but not as long as if the drivers were further along for the screen brightness and processor/os sleep states, I think.

I can work many many hours not plugged in. I'd not measured how long.