the Noryl handle on the Griptilians is full of nooks and crannies on the inside of each scale. I would not clean the knife with soap and water unless I took the knife totally apart so I could dry all the inner nooks and crannies 100%. I can see how folks can use soap and water, assume they have dried the knife out, yet actually leave a good amount of water inside the handle. Should water buildup be beneath or around an Omega spring I totally see how that would cause corrosion etc.
I have always hated the cheap Noryl handles on the Grips. They feel pretty secure in hand but are still just thin cheap plastic. I am currently replacing the Noryl scales of my 3 Grips one at a time. My maroon linen micarta mini Grip scales from KSF will be here today and I cannot wait!