I am pretty confident, that although C1 will export as DNG, it won't do it for Fuji files (or at least it didn't), but Phase One make minor improvements (some of which are important to a small number of people) at every point release.
Personally, It seems a waste to just demosaic in C1 and then move the file from C1 to LR for editing, as I find the editing tools in C1 to be more intuitive and powerful than those in LR.
I now primarily use LR as a DAM (as well as Neofinder) and for some other functions, but I work the other way round and send RAW files to C1 from LR for demosaicing and editing, before round-tripping to PS from C1 for final editing. Final files as PSDs, TIFFs or Jpegs are then catalogued back in LR and Neofinder.
If I wanted to use LR for editing I would probably bypass C1 altogether and just go with Iridient X, with its proper LR integration.