well, if you want to save your loadouts in case you're planning to return to the game in 80 years, once you become the guy who gives you the Red Planet quest. You can download SCVE. And save the loadouts there you want. Though, if you want to add them into the game, as appearing when you want to fit, but have not saved yet, then you will have to give it a trait in its notepad file. And that is a lot of stupid nonsense I hate doing myself.
But having the variant itself appear in your save file is a good thing for when you are trying to mod something or just save something... Or maybe even easily share a build. But whatever...
The mod is meant for 0.96, but you can just change the update's number to 0.97 and it should work fine. Does for me.