Outer Worlds is way closer to a Fallout spiritual sequel (or beat Starfield to the punch) than an Elder Scrolls game.
Did they ever fix the reputation system? I managed to instantly piss off an entire city while I was in the middle of it because I accumulated one too many “We don’t like you” points in the middle of a quest. Completely ruined my immersion and was a hard stop for me.
If you have the port and money for it, I’d recommend a separate drive for the second OS. Windows is kinda notorious for stomping over GRUB if you rely on partitions for your dual boot.
If you’re worried about installing to the wrong drive on accident, you can always physically disconnect the existing drive until install is complete, then plug it back in and set the boot order in the mobo config.