mine is in my firegroups.
you want it to have its own key , ic
not sure why though other than one person says its easy enough to scroll past.
this, I get, and I have seen sooo many people fumble with groups, or leave a station with wrong weapons, etc...
then you fumble till you notice..
fwiw, for me, I have an interdictor on my combat ships, even if I don't have a use for it, the interdictor marks my spot. so I always easily know which group I am on.
it helps a lot having this as a habit..
any ship I jump into, first thing I do is look at the modules, then the firegroups to see whats what. and if there is no interdictor on the main group, then its the wrong ship.
even if I don't look first, if I don't see it in the main view, I am either on the wrong group or in a non fighting ship
it is always visible in SC or normal space so its a great indicator just like the pointer on an automatic gear shifter...