Thinking of trying to morph my Leap workstation into Tumbleweed (and potentially Slowroll once that project matures enough). I've seen that you can do it . I reckon I can rollback relatively easily via the BTRFS snapshots if it goes sideways, but just curious to see what others' experience with doing so has been.
Don't do it. Instead of doing something useful you will be in a constant process of updating and rebooting and dealing with breaking changes and eventually you will give up and switch back to Leap.
Misinformation 101?
Have you even tried to do it? You don't sound like it.
I've done the Leap -> TW switch three years ago and I'm updating once a month (or maybe once every two months for a while) and never got any breakage.