I haven’t tried it because I’m such a long time Ubuntu user—accustomed to deb packages. Did you have to overcome this?
tldr: QubesOS has a steep learning curve, but onces you're past that... 🤌
You've converted me nostr:npub1f6ugxyxkknket3kkdgu4k0fu74vmshawermkj8d06sz6jts9t4kslazcka , Qubes is so damn awesome! TY 🫶 🫂
Took me 5 hours learning to install and persist data in the VMs😆. But once it clicks, its pretty decent to navigate and moving through the system gets more seamless as time goes on.
Adding onto my tasks - explore the WM support, l really like keyboard navigation :)
Discussion
Qubes has its OS specific package manager to deal with the admin Qube for specific packages, but that generally isn't your priority and shouldn't be touching that part of your system.
Everything else runs in VM's. Yep VM's with their own filesystems (there are ways to pass files through each though). By default, Qubes has Debian, Fedora and Whonix installed, but the community has Qubes templates for other software. You could also use a VM for other OS's youre comfortable with.
The fact that everything is VM's is you can experiment with different systems, versioning them. If you mess one up, you can delete and clone the Qube from the previous version.