Indeed, I used Spine to animate the characters. And I backed Sprite Lamp, too, but my normal maps were created from depth maps rather than lighting profiles (creating 4 lighting profiles for each animation frame would be very time-consuming).
However, I decided to provide the toons as sprite sequences, so they can be used with any engine.
So this is not a project related to SFML only but could be of use for some developers here.
The characters all have some kind of cartoonish look, and the gnome wizard girl so far is the only one that doesn't look "monstery", I think.