Thanks Neil,
Previously we've built iPad DPS folios for our clients, who also have an Adobe account. They were able to access and download the folios through the Content Viewer...no user ever had to download the app we created through the App Store.
I realize the Content Viewer isn't used for DPS 2015, but could this experience be the same for the users using DPS 2015...download an app without having to use an app store...just like DPS? Or would a DPS 2015 app only be available through the App Store? Or would it make the most sense to continue using DPS in our case?