You don't have to remove other WMs to try a new one. Most login managers will let you choose at login.

good point, but I still do a lot of work in VMs, that's where most of my workload is. But for my other laptop without VMs I could try that, thanks.

Many wayland compositora can run as clients of another compositor.

So you can run a niri session inside of a gnome sesson for example. No need for a VM.

Just install sway and run it from a different tty

It's not really a commitment though. I have like six WMs installed I can switch between.

You can often install packages in a live system ("try" option of installation medium). The backing storage for that is a RAM disk overlay. Did you not know or is that too short-lived for you for a proper trial?

then you'll have to stop using your existing system. and yes, it's too short-lived, I'd want like a week of usage normally. I can see the videos and screenshot to know what it looks like, I want to see how buggy it is, and how hard it is to manage things with it.