In fact, my last batch of chili was done in the PC. I greatly simplified my technique from my usual stock pot on the stove method. I usually do 4 separate dumps of different chile powders, and add the tomatoes/oregano/cumin as a separate step, too. I tried this once with my stovetop PC - what a PITA and it didn't save me that much time, with all the depressurization and reheating cycles. So, this time with the new electric PC, it was only 3 steps - Step #1: sear the meat, onions and garlic, then add the initial slurry of rehydrated dried chiles (secret blend) with soaking liquid and some beef stock, and cook in the PC for 20 minutes. Step #2, add the Rotel tomatoes & green chile, Mexican oregano, cumin and what normally would be my first 2 dumps of chile powders, and cook for another 20 minutes. Step # 3, last 2 dumps of chile powders and another 20 minutes in the PC. Have to say, it was as good as my regular stove top method and took half the time. My only real tweak for next time - didn't need to add as much beef stock as usual, as I ended up having to reduce it down and add some masa flour to tighten it up at the end.
Without giving away too many secrets, here's my source for most of my chile powders and dried chiles.
http://www.penderys.com/