Well, I've never done it, but it should be possible. Get a model with the cell-shading effect on it and just follow the rim lighting tutorial over that one. If you get into trouble, I'll try it too.
Thank you for replying.
I think the reason it hasn't been working out well on my end might be because there's no shader stage with RasterColor for ColorSelection C. I went ahead and added the new shader stage anyway and changed the value on the preceding stage to RasterColor, followed all the other steps for rim-lighitng, and the in-game result was a flickering model.
I'm still trying all sorts of different combinations though, so any other advice, tips and such are appreciated. Thanks for the help.
edit: Took some time, but I was able to achieve the effect. I used a very different approach to achieve it but the effect is mostly the same.