Semi old thread, but was wondering with how it compares to the foma papers
It doesn't.
Fomabrom is neutral toned, responds very weakly to changes in development, doesn't respond to selenium (well, it does, but weakly and in an unattractive way), and tones extremely beautifully in indirect sepia toners, giving deep brown tones even when toned to completion. If you like sepia, that's the paper to use.
On the other hand, Variotone is a semi-warm toned paper, which responds to changes in development (though not as strongly as true warm tone papers), gives beautiful dark brown tones in selenium, but in indirect sepia toners gives weak colors when toned to completion, so it needs to be split toned to look good.
Fomatone is a true warm tone paper, which responds readily to changes in development, can be used for lith printing, gives nice reddish brown tones in selenium, but is unfortunately coated on an ugly yellow base.
On the other hand, Variotone is not quite as responsive to developer changes (I mean, it does respond to changes, but not as strongly as Fomatone), doesn't lith, and is coated on a beautiful clean white base.
So I'd say that Variotone has nothing in common with Foma fiber based papers.
I'm using both Variotone (for untoned or selenium toned prints) and Fomabrom (for prints I intend to tone in sepia). I think they complement each other very well.
If you're looking for just a hint of warmth, give Variotone a try. That's precisely what I like about it - it's warm, but not overly so.