Ok, I'm aware of the technique of painting acrylic on illustration board to take advantage of its quickness, using spray fixative on it (I think), and then oil painting over it to take advantage of the medium's refined blending.
I have a slightly different plan. I want to make a watercolor-like acrlyic painting on 300lb watercolor paper, then somehow fix it, and then oil paint over it. But I want to be aware of any problems that might arise out of this combination.
It seems that paper is always gesso'd if it's going to accept oil. Obviously, I don't want to cover up my acrylic underpainting.
Perhaps clear gesso would work? Would I have to somehow dry-mount the paper?