Oh god, Yeah I read that this paint has a tinted clear coat of some sort. I also read that some wet sanded in really really small patches; apparently someone did holes in a 2000 grit sand paper with a hole puncher; then use the eraser part of pencils and wet sanded the spots once it was finished. BUT I'm scared of how they would look like at the end of the day. Especially now that I have ceramic coated the car; I would have to remove the coating and reapply once it's finished.My brother had an issue when he tried to touch up a spot in his new Ruby GT bumper. I think the damage was a little bigger than a typical rock chip. He is pretty handy with such things but IIRC, it went bad when he wet sanded after he used touch up paint and he ended up having the bumper repainted. I may be wrong on this, but I think the issue may have been that there was an extra tinted red coat or else the clear coat had a tint, which he said was part of the reason for the extra cost for Ruby Red. I know it was something different than the typical color base coat and clear topcoat.
Anyway, I hope someone else can report success and provide you tips using Ruby Red touchup paint pens on chips. Based on my brother's experience, I wouldn't wet sand the area in any way - just fill the chips. Good luck!
edit: I have had pretty good luck touching up small chips in other colors (including my Lightning Blue) with the touchup pens.