Izotope RX10 de-ess users?

Just stumbled across this one in my plugs. I have the RX10 for restoring some old vinyls but never came across that I had the de esser I could use otherwise too. I was working on a vocal track yesterday and started using this as a plugin, not exporting to stand alone app. Seems to be a good tool. Any one using it and have experience with the classic vs spectral modes? Cannot find much on it online despite searching. Izotope gives a brief explanation but that’s all. The concept of the spectral de essing speaks to me as it seem to be a very transparent way to go, but would be keen to hear how others have experienced it.