I haven't.I could see stainless steel or jescar frets making flat spots on soft nickel.
I used pure blues for a long time,but usually on run of the mill frets.
If your in an experimental mood, try some Curt Mangan strings.
Playing the mangan nickels for the first time was a nice little eureka moment for me.
(I've since found TI powerbrights and they are just stellar!)