I started loading 9mm with 4.8gr of WSF under a 124gr bullet. During the great shortage of 2014, I was desperately searching for a replacement powder since my supply of WSF was dwindling and there was none in the stores. Found 12# of CFE Pistol at DE Guns in Lincoln, read some positive reviews about it, and snatched it up. I would say the pistol powder is VERY similar to WSF as I worked up some test loads in 0.2gr increments. Ended up settling on exactly the same load as I had been loading with the WSF.
No more, or less, dirty than WSF. Accuracy seems to be good for a hack like myself.
Fly