I think that sore sit bones are normal - until I started riding very regularly, I'm talking 5-6 days per week I always had sit bone soreness on the day after a long ride. After I did a 2 week tour and with mostly every day riding I don't ever feel that anymore.
I've also recently started using a new saddle and I am feeling a bit of discomfort that I'm hoping/ assuming will go away once I break in my backside to the new configuration. Otherwise its very comfy - doesn't touch any soft parts that it should not.