I use nickeled cases for reloading, modern bottleneck rifle cartridges only, specifically .280 Remington and .250 Savage. I don't have any "pistol-cartridge" firearms. Since I usually only fire my cases about 6 or 7 times before discarding them, I've yet to experience peeling or flaking. I've heard it said that the nickel deposits can scratch your dies.....I really couldn't say.
I like the slick surface because I use Lee case Lube, and after sizing I have to clean the waxy deposit off them, a job I find easier with the nickel cases. And I'll admit it....I think they're right purty!