The important thing to understand is there are two types of side chain inputs on compressors.
The RNC/RNLA use an FX loop type. The other type, for daft punk style squashing and rebounding is a “KEY” input type. You can get the “KEY” input if you follow FMR’s FAQ and not connect the “TIP” side of an insert cable.
I actually prefer the FX loop type, as you can get heavier gain reduction without artifacts when using an HPF like the FMOD, or an EQ with heavy cuts in the low end (A mono bass eq pedal also works, by the way). The big bass of dance music won’t trip up the compressor (which is a usual complaint on the RNC), and the result is not unlike an L2 or Ozone master limiter.
I use this live with the RNC, in Super Nice Mode and you can hear it doing its thing on the entire mix here: https://soundcloud.com/adamjaylive/adam-jay-live-pa-louisville-ky-12-31-15