you think the killer still keeps the ( outfit ) or has disposed of it ?
I think the killer has kept at least part of the outfit. In fact, I think that might be how he is finally connected to the murder: at some point in the future, he will be discovered with a trove of "swat-looking gear" by law enforcement - either by being pulled over or in another burglary event. He may change it a bit but the basic components of it would remain. My own opinions.