Now I don't think this is the norm, but as I always say there are no rules.
I use a 31 band as an insert (Analog Console) on the kick drum channel. I use it to take out problem frequencies, for example the 250 Hz area where sometimes the kick sounds a bit boxy, and I sometimes boost around the 4Khz if I want a bit more click. You can do the same with a parra, but I find it easy to reach for the sliders.
Using the 31 band is an old habit of mine that I picked up from doing live sound, I had a spare 31 band in the rack one night so I inserted it in the kick channel (as the drummers kick sounded like poo) and fixed it up in seconds. I always used a 31 band from then on, it was good for when there were 4 bands a night on with 4 different kick drums and very quick change overs between bands.
The other place I use 31 band eq's is as a side chain on compressors when trying to de-ess or de-pop.
Cheers
Alan