I have the full size one and I love it. I replaced
most of the keycaps with Nuphyair75 caps. Sound and feel is much better. There isn't 1:1 for each key, they aren't shine through, some keys don't fit, and I had to buy two sets to do all cmd, fn, opt, ctrl modifier keys but it was worth it for my OCD.
The normal keycaps are fine but definitely can be improved IMO. I didn't like how the legends were printed and felt like they were low contrast. I have a monitor light bar and it made it hard to see what was on each key because of how light reflected. After switching the keycaps to Nuphy I don't even turn on the backlighting. I've had the keyboard for a month+ and it's still at 100%.
The one thing I'd recommend is lubing the stabilizers that are on each wide key (spacebar, shift, enter, backspace, etc). A lube kit is $10 on amazon and there are YT vids for it. Very easy to do and gets rid of a lot of the rattles you hear.
One thing to keep in mind with mech keyboards is 'quiet' simply refers to the switch. The keys still bottom out and are louder (depending on typing style) than any membrane keyboard and the magic keyboards are silent in comparison. These are perfectly acceptable in an office environment but if you are in a compromised WFH situation with sensitive spouse, house mates, sleeping baby I'd be careful.
I didn't think I needed the device switching but I it's been useful- sometimes I end up looking at my phone and typing an email or something I just press #2 on this keyboard and type away! I also think they nailed it with the emoji, screenshot, and mute button- I find them all useful for WFH. Also, the FN row is fully customizable and includes Mac OS mission control (as you can see my f16-f19). Only thing I noticed is the FN keys have quirks using the receiver but the connection is rock solid, on BT the connection may not be as solid but FN keys work perfectly. My last complaint is it goes to sleeps/disconnects too fast at times, and when I accidentally wake it via FN button it'll wake up and use the default setting instead of mine which can be really annoying. Other than that I love the thing.