Many years ago I regularly shot the Provia 100 (no 'F') with a pale amber filter; for people photography (which was my interest so many years ago) I like the effect better with a bit of warmth added.
There was a thread here on APUG last year that bemoaned the odd colour of 400X in artificial light, a sort of "Instagram-look". I remember viewing the pics and thinking they looked very antique by the palette alone. Who posted that thread??