I have a DeSantis Superfly and I really like it. It definitely will not come out of your pocket with the gun. And holds the gun as well as any pocket holster out there.
I've carried an LCR in a Nemesis, awesome holster. Super grippy, actually was a bit of a fight to get the holster out of the pocket. The gun came out fine.
I'm not entirely certain what the LCR is finished with, but I use mpro7 on my blued guns. If it doesn't hurt the bluing, I doubt it'll bother the LCR.