Once Kansans learn that Orman is basically a Dem, he will be soundly defeated.
Time will tell. Roberts is none too popular for all the reasons that Wolf brought out in the primary. Plus there is still a significant base of more moderate Republicans in the east that could go for Orman. Don't forget, Dennis Moore didn't win 5 terms in Congress on Democrats alone. The idea of those voters going for Orman over Roberts is not that far-fetched.