I've been using sway daily since before it was really stable and recently tried Niri but maybe couldn't get over the muscle memory from sway. I use sway mostly in tabbed mode anyway which gives a similar feel to a scrolling WM but with flexibility to break out to tiles in a different workspace if needed.

What has massively improved my workflow recently is vertical tabs in Firefox. I now have browser tabs I can cycle up and down through on side of my screen, and application tabs I can cycle through left and right at the top. I love it.