Pied markers are a bit 'over-rated' in my opinion.

I personally have a ball python with strange markings with the marker, but I am quite aware he is definitely not het for pied. I think there are possible markings that we are over-looking that can indicate a het, but the pied one, not so much.

I've seen het. pieds with it, poss. het pieds (priced severely higher than the siblings, which I think is wrong), and many many Normals with it.

So, to answer your question, unless the parents had the genetic background, it is not het. for pied. (99.99% considering that caramel pastel spontaneous mutation thread I just read )