It should work normally, there's even cinnamon applets for controlling it from the panel
NixOS has snapshots built in as well but I've never had to actually use them to recover anything because Nix packages are built in isolation from one another, and their dependencies are declared, so packages can't break each other when installing or upgrading them.
NixOS is also an immutable distro, which prevents accidental bad changes to the system. Tumbleweed is very friendly and stable compared to many other distros out there, but it's still vulnerable to accidental breakage in the same ways most other distros are. I think the cherry on top for the average joe using Nix compared to OpenSUSE, however, is just the fact that the Nixpkgs repository absolutely dwarfs OpenSUSE's.
Luckily, if you prefer to stick with whatever distro you're running already, but want the power of the Nix package manager, you can get the best of both worlds and install just Nix (without NixOS) on any distro.
If you have any additional software which you are looking for FOSS Linux alternatives for, feel free to list them. Your options are much greater than most people coming from Windows expect them to be, and many of us have already spent a lot of time deep down the rabbit hole of finding quality open-source software alternatives, so we can surely point you in the right directions.
RIP Gordon Lightfoot
Very nice! The polished deepslate pillars compliment the amethyst well.
(P.S. While you can only select one cover image per post, you can put as many images as you want in the body section of the post.)