I am unsure if this mod adds any restrictions. I think it just adds a lot more armor that is under the Personal equipment "Armor" category, same as base game... double checking...
Yes. Doesn't edit what is allowed to go where, doesn't add or edit any grids to any other items, like vehicles. So you're even allowed to put this in Spidertron.
However, I also have another mod, Vehicle Equipment. This doesn't change what it allowed to go in where, but it does add a whole new set of mostly duplicate (with edited stats) equipment. It also adds new categories, adding new grids to vehicles like the car, tank, and all rolling stock, and changing the Spidertron to have grids that make use of this new Vehicle equipment instead of Personal equipment.