I'm wondering how certain you are of the identification of this iris? It doesn't appear to match Stepping Out, which generally has a minimal amount of white on the standards and a very heavy band of color on the falls.
I suspect they sent you Rare Treat by mistake, although there are several other very similar irises in the Schreiner collection. I am certain it's not Stepping Out, though.
Should I change the name to Stepping Out on all the photos I submitted? It would be the first mistake I've had with Schreiner's and I can't imagine them having such similar irises, planted so closely. That would invite errors.