Hopping on late to this, but I'm setting up a TouchOSC template to be able to control the Catalyst 60 from pretty much any computer/phone that is running the TouchOSC app. For me, this will work to control via USB MIDI from iPhone/iPad to USB adapter, then wired to Catalyst via USB.
Next step is Wireless control via a WIDI adapter on the Catalyst that receives wireless MIDI via Bluetooth from same devices. 3ms latency. Killer.
If anyone interested in this resulting TouchOSC file and/or video, let me know and I'll share and whip up something for YouTube.