The only reason it will not work would be if OP has manually configured stuff in /etc/X11 in some way. You can even have both in the system at the same time (which does require a little bit of extra configuration). Absolute worst case you check out /var/log/Xorg.0.log it tells you the config you forgot in /etc/X11/xorg.conf.d/20-nvidia.conf 5 years ago doesn’t work because the GPU is gone, you delete it, restart Xorg and you’re good to go.
Even on Windows it’s kind of a myth. Some people are like you need to DDU the old driver in safe mode before swapping them out. You can really have them both installed it’s just going to be weird because on Windows both vendors come with ridiculous amounts of bloat.
AMD cards just works as long as your distro is reasonably up to date. No extra drivers, in fact, installing AMDGPU-PRO is usually worse unless you fit some specific use cases.