I segregate and load separately my 38 special "Wadcutter" brass(double cannelure around the center), most of which I bought very well used. About half of it is brass, a quarter nickel, and a quarter brass that was once nickel(the only remaining nickel plating is on the head). Most of it is R-P or W-W headstamped, but I get an occasionally Peters, W.R.A. or other old headstamp. Most of it keeps plugging along just fine. I get an occasional split(usually in brass W-W cases) but that's it.
I also have a handful of nickel plated cases in other calibers, primarily 357 magnum and 44 magnum. In nickel 357s in particular, I have a pretty wide variety of headstamps, including Starline, R-P, W SUPER W, Winchester, Speer, and probably a couple of others I'm forgetting. I set them aside primarily for load segregation purposes, and usually the nickel cases end up getting maximum loads of "magnum" powders(2400, 296, N110, 300MP, etc) so are probably stressed more than my brass 357 cases that I use for my more moderate 357 loads. I've yet to have a 357 case split, in either nickel or brass.