Twig,
I have the water based dyes, I bought them and tried them years ago, they're still in the back of a draw somewhere.
Spirit stains are another story, I bought the trial pack and liked them so much bought the 1/4 ltr bottles. I use them under most finishes, especially oil, but as Pete says, you have to let them dry before applying any finish,
This is an old piece I stained and posted once, spirit stain and danish oil.