I am switching from a Specalized Avatar Gel to a Fizik Arione. After a 20 mile ride on the rollers and a short 12 mile road ride, my sit bones are a bit sore. Should I expect this going from a padded saddle to a less padded saddle?

yes. it goes away as your arse gets tougher.

I hope so. My butt should be tough after 7k even on the gel saddle.

Arionne may not be right for you. They run about 50-50 for average riders.

Possibly.....I'll give it some more time.

I give any new saddle at least 1 week or 100 miles (whichever is greater).

Thanks for the feedback.