I’ve been using the PaperWM extension for Gnome (that I believe Niri took inspiration from?), and it’s definitely an interesting way to work. I’m not sure that I love it, I feel like it’s a bit cumbersome when I have more than 3 windows in a single workspace.
But I’m giving it a real shot, and the nice thing about it being a Gnome extension is that the rest of the Gnome DE is right there without a ton of config.