That's a great question, how long will Shep and Shelley last? Their ratings have consistently been in the toilet every single book. When I say toilet I mean a 4 share would be an improvement. But you probably know Shelly is the PD, and she doesn't care about ratings (she is open about that), so who knows?
I've only heard the show a few times, but I can tell you this: The general consensus from listeners I've spoken to, as well as industry people is Shelly=good, Shep=schlub. Their music is improving though, a lot more variety, they sound like B104.