Finally had a chance to play with it, and it is a bit snappier as @joekamprad says.
Cinnamon works particularly well in Endeavour generally. The modification of the Arc theme to a more readable font is matched by Kvantum having an Arc theme too, so you get a nice consistent look across GTK, Qt5 and Qt6 apps (The elephant in the room is of course libadwaita, but at the moment it’s possible to find (often better) alternatives for those apps with the libadwaita infestation “feature”).
Cinnamon in Arch also has fewer required dependencies than in Linux Mint, so it’s possible to get a good looking, less bloated and more personalised Cinnamon desktop in
No extra packages needed, it appears in Cinnamon Settings. It’s not enabled by default for me, but that’s probably because the laptop I’ve installed it on is so old that gestures doesn’t work at all (gestures don’t work in Gnome either).