I have now been able to make some lith prints from the most recent IR film that I had used. After a little experimentation I have some pleaswing results on the Forte Polywarm Plus paper that I was recently given. It seems to benefit from a slightly stronger dilution of the lith developer (around 1 + 12) than the Kentmere Warmtone takes but it can work really well with some strong blacks and good colour.
(Woods - Landes de Cojoux, beside the megalithic site)
I have posted scans of a few in the lith prints gallery. Scans may not be as good as the real thing, but they give an idea of what the film and paper can do.