Like @Reyfox I also installed Win11 Pro on an Nvme so now I have a dual boot Win10/Win 11 system. No problems with the installation, although I must admit I rarely use Win11. I did find some Win10/Win11 differences last summer when CCFS was being integrated into HOS requiring the CCFS developer to make some changes to accommodate both OS's. I have no idea the exact nature of the problem.
One interesting thing. Even though it's the "same" PC, Vegas considers each system a separate PC so you have to switch licenses--at least on my system.