I mostly worry about ball/angolan mixes myself. Balls outnumber angolans enormously in private collections, so if the offspring were fertile, you could easily wind up with a situation in which it's difficult to find "pure" angolan bloodlines. Would chipping help with that? I'm not sure--it's actually the offspring that you'd want to keep track of.
Honestly, what I think we need to do is sequence some python genomes and cook up some affordable genetic tests. The way they do with dog breeds. But with more dang reliability.