Building the next update locally is slow because erofs has to compress the entirety of /usr on my rather old laptop and that takes a while.
Aside from that, I'm using flatpak for firefox and for some reason it takes absolutely forever (like > 15s) to start firefox on my machine, still need to look into why that happens.
Aside from those it's very usable. But of course it's running systemd from source so I'm not going to actually recommend anyone to run this who is not a systemd maintainer until we iron out the kinks.