ORIGINAL: Campy
The only problem I see with drawing the lines and rivits on the clear is that none of the pens I know of have waterproof ink. The Windex is going to take the lines/rivits off, especially if you shift the covering.
Topflite Panel Line Pen... or if you don't want to pay the $6 that Topflite wants get a superfine Stradford. It looks EXACTLY like the topflite pen just with the Stradford name....
I drew on the monokote with the panel line pen on the glossy side & adhesive side and then sprayed the windex on it after a few seconds. I let the windex pool and sit on the glossy side and the adhesive side of the monokote for a good half hour. No smudging. Considering 99% of the windex would be squeegeed out it should work. I myself would probably get the monokote clear in place fast and squeegee fast, just in case...
However I also tried using my trim iron on low heat (not with windex, dry of course...) and was able to adhear the clear with no bubbles and then go over again on high setting to really lock it. This takes a VERY careful hand to keep the line straight. lol. Windex much easyer!