I use only water-based paints, so I don't worry about the Solarez getting under the paint.
But I do worry about uncured Solarez being a problem inside the joints on jointed swimbait repaints.
When I brush the Solarez onto a jointed bait that's already assembled, like a repaint of a BBZ-1, I hit it with the UV nail light to cure the faces. Then I take it out and let it sit in the sun with the bait turned so one inner side of the joints faces the sun, and then, after 5 minutes, I turn it and let the sun hit the other side of the joints. That way the Solarez inside the joints gets cured, too.