It works. Not sure how sensitivity is supposed to work. It currently is a LOT LESS SENSITIVE than the equivalent touchpad scrolling behavior with XWayland.
Here's a test: * Create a directory with 2433 files. Run wine explorer.exe with XWayland and native Wayland then navigate to that directory. * XWayland: Touchpad two-finger scroll requires 18 full sweeps to get from the top to the bottom. * Wayland: Touchpad two-finger scroll requires 100 full sweeps to get from the top to the bottom.