I really dig how Trent Reznor looked in the 90s. In my opinion, Broken, The Downward Spiral, and The Fragile really represented the pinnacle of NIN's greatness. I like their 80s and 00s/10s stuff too, but the 90s were THE decade of NIN.
It seems a bit strange to combine them, but I'm a strange person who likes strange things, and in a way they go together quite well simply because they are both things that make normal people go "wtf?" I'm a pony fan, and I'm a NIN fan as well, and I perfectly understand that those two things don't appeal to some people. I'm fine with that.