Very user friendly.

libinput adopts a Gnome-like anti-customization policy, sadly. I miss pointer acceleration curve configuration and all the knobs that the old synaptics clickpad driver provided. With libinput, it's as if they know the one right way to mouse, and if you disagree, you're wrong. It's a loss.

It's also a loss that Wayland compositors don't seem to have a decent way of providing input-device-specific XKB layouts like I can do in X11. That means that if I want to remap keys, I need to do it hackily by intercepting evdev events and having the window system use a virtual device. XKB was much cleaner.