I used an Apple Silicon 13" MacBook Pro for the ten game homestand the Astros just wrapped up. It was the first real photo workout I gave it, but the weird photo positions were a great opportunity.
The battery life was outstanding just as I had hoped. I never dropped below 70% despite editing the entire game, checking the boxscore, setting up code replacements, etc. All the other photogs on Intel Macs were having to bring battery packs or run extension cords.
I feel like the screen isn't as bright as my Intel 15" and the speakers aren't as loud, but otherwise it is a nice little compact machine.
Photo Mechanic (Rosetta 2) and Photoshop (ARM native) ran just as fast as they do on my old Intel Mac. I didn't notice any problems with the emulation, it just worked.
So while native ARM support will be great, it isn't holding up anything that I can tell in my real world deadline testing.