After using Silverblue for some time I tried to use Arch again, and pacman had failed at installation process. A easy fix for that is to be like: 1. Get list of all the installed packages; 2. Install all these packages again with --force. But after using immutables the situation is just meh.
And also now I dislike package managers which require to be used with sudo, and cannot ask for permissions with polkit.
It's been just over a month using Fedora silverblue (Ublue ) for me and the experience has been pretty good.
What I do is just setup a distrobox container with the arch image and install software using paru from AUR. So far this workflow has been working really well. for me.
Also if you decide to use any Ublue spin, you'll also get homebrew pre-installed. So that can also be considered as an alternative option to AUR.