On some of the bosses in part 2, the sword puts out all red numbers. On the riff raff in part 2, I was using my vorpal. In part 4, I snuk it out and tried it on some of the riff raff, and it was putting out red numbers on the gnolls. The devils and the pit fiend are immune to acid damage, and the pit fiend has DR that turns the first number yellow. So I switched back to my 2hander for the Pit Fiend after testing it out.
The stoneskin clicky is 16 minutes of 160 points, so that's nice. I figure I'll get some mileage out of this weapon, especially if I can upgrade it to the 4 AC boost. I just might not get as much mileage out of it in that particular raid. If I was making a weapon for the Shroud Raid, I'd probably make a maul or greatsword and go Holy + Good Burst + STR