Is it worth adding a windows install for?

nah, TTW is just an extra area to acquire XP and bonuses to refine your build, it doesn’t really add much to a playthrough extra modded content for base FNV wouldn’t. unless you’re really down for those mods with NV-TTW interactivity

Eh, maybe if you do the install in Windows then transfer it to Linux, but that’s a lot of effort, sadly