My FNV is through Steam... but... i think Limo does support GOG... I... would think you would, yes, have to set up your own filepaths, point it properly to where the game dir is, and it... should work?
You can launch a game from Limo, like, I do test runs of that in desktop mode on my Deck...
But the way the deployer system works is that you click deploy... and the even if you launch the game from some other way, like via Steam, in game mode on the deck, or... presumably via Heroic... it just now is the modded game. To revert, undeploy in Limo, and then either play vanilla, or swap to another modset profile and deploy that.
For NVSE, I just literally did the old school method of go into the real game dir, rename the main exe to .exe.old, and then rename the NVSE exe to the proper FONV game exe's name.
That and manually install the dlls and other files that come with NVSE into the real dir.
This isn't much of a problem with older games, but with newer games, that method would potentially be undone by ongoing update patches.
This is the kind of 'some mods you just have to manually install' thing... but in fairness... most of the time those mods are the same way on Windoes as well, unless some kind of mod manager goes far out of their way to specifically support that exact mod.
I was basically a splindly but evidently cute twink when I was in college, and I got cat called fairly frequently whenever I was out in the LGBTQ/Lots of Bars and Clubs district.
Sometimes it was drunk girls, more often it was drunk gay/bi guys.
One time that I distinctly remember, a guy and a gal were out on the sidewalk tables, the guy (seemingly dared to ask by the girl) waved at me and asked me if I was 'trisexual'.
I thought about it for a bit, and responded '... yeah, sure?'.
( I had made out with a guy once in a game of spin the bottle, not half bad!)
Guy got up and kissed me on the cheek.
... The next day I told a friend that had happened, and they said something to the effect of 'well that makes sense, you are a bit of a twink'.
... And that was how I learned what a twink is.
This was back in the late 00s and early 10s, and while I'd always been accepting and nondiscrimantory of anyone based on the way they dress or their sexual preferences... I hadn't really been exposed at all to any LGBTQ history/culture/terminology at that point... tended to spend too much time studying.