If an iPhone/iPad app does surface, how about a live performance oriented browser/librarian such as the Omni Live app made for Omnisphere:
http://www.spectrasonics.net/omni_live_app/
I find that just navigating through the millions of patches can become a daunting task especially on the fly when you are jamming with a band and don't know exactly what sound you'd like to use for the moment (and want to try something new). Make browsing easier and faster by utilizing the larger screen real estate of an iPhone and especially the iPad!!
