I have had LTV negatives made from digital files. You need to experiment, because the film used (in my case, TRI X 320) will most probably add contrast to the image. I made a range of contrasts and had them run 4-up on 4x5 film that I cut down and enlarged. It works out well--I actually prefer the more contrasty silver print to the inkjet of the same image, although I could probably adjust the digital to print the same.
Digital file:
Scan of silver print from LVT negative:
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