Using direct positive paper for enlarged negatives

[ValoPeikko]

Has anyone had experience using direct positive paper (Imago direct positive RC paper was in my mind at the moment) for making enlarged negatives with out interpositive. Considering this for alternative processes mainly, due to the fact that my usual medium, x-ray film, is quite delicate to work with. So enlarging 4x5 negative to direct positive paper would be easier then my current work flow (to enlarge to x-ray interpositive, then contact print to other x-ray film). But is there something to consider when trying this out? Any problems I should be aware of?