As far as printing on VC vs graded paper, I was always under the impression that Pyrocat was designed to work best with graded papers, where the stain would help contrast.
Some of the best prints I've ever done are on Kentmere Bromide G3 with Pyrocat negs from FP4 or Tri-X. Just huge impact in highs and lows while retaining good separation in the mid tones. All this by my standards of course...

- Thomas