I ended up using the action button for a flashlight, but rarely use it, as it and the camera are easily accessible from the screen with a button press or quick swipe anyway.
It's been a welcome improvement over my prior phone, an iPhone 7, but the software is... how can I say this muting my frustration a bit... horrible. If it was sent to me at a restaurant, I'd send it back to the chef. Big issues with alerts, Standby mode, and dynamic island, which I think are more an issue with iOS 17. I rely on those pieces for critical health related information available on the fly, really considering reviewing Android options. There's combinations of using Standby with an Apple Watch that basically turn off audible alerts that I can't re-enable without keeping the device off Standby, the clock is the only screen on standby that shows in real time, meaning data is often ten or fifteen minutes out of date, and dynamic island will only allow use for up to eight hours. Apps need to manually be tweaked to push value in to dynamic island again, which... you can do with a shortcut, until 17.4 came about, and now gives a 50/50 chance the shortcut would successfully update or not... and if that shortcut is fired while in standby mode, said information is shown full screen and you must take the phone off the charger, turn 90 degrees, back another 90 degrees and place back on charger to see dynamic island detail back on the Standby screen with a clock. The infrequent updates of Standby apps are... a big miss. If the device is always being charged in Standby mode, what's the concern allowing an app showing updates every five minutes? Why is it randomly delayed much longer than that?
The amount of hoops you need to jump through to get tiny bits of information on a complication on a watch, or phone every five minutes is such a bummer.