They do rust like the spin milled version. I haven't heard anything about a black nickel version.
Check you this site: http://www.vokey.com/wedges/detail.aspx?id=46
Glad to hear you liked them. I carry mine 20 yards farther than the 909 I was using.
Mr. Crane was hitting the sweet spot all week(end), eh? It's always good to see a great guy like him, win.