I tested it a bit in a VM to get familiar with pacman and yay. Latest KDE Plasma 6 and more snaps in Ubuntu's future are the main reasons I want to switch.
As I don't use a separate home partition, I have an extra drive with BackInTime home dir backups and virtnbdbackup snapshots.
Is EndeavourOS stable enough for everyday use and would restoring home with BackInTime just work (as root user)?
Regular Endeavor users can chime in, but it wasn't super "stable" over the past couple years, but I think mostly because it's easy to misconfigure and cause conflicts. It's meant to be highly configurable and variable without a lot of guardrails (I know they were adding most automation awhile back). If you know how to diagnose and fix basic issues that come along with that, I'm sure you'll be fine.
I don't know the specifics, but when you -Syu and there's a kernel update, at the end of the update it will run some additional commands. I'm pretty sure that's normal pacman behaviour, but I haven't used vanilla Arch in a while. At that point mkinitcpio would fail silently, I couldn't boot afterwards, and there were no warnings about it. Running the command manually would work without an issue and allow me to boot again.
Ok, thanks. I already found the tool nvidia-all, which allows me to use old driver 535 until the big wayland regression is fixed (hopefully soon).
With that out the way, switching the rest of my software to Arch should be easy.