I did create shell scripts and files for application entries to switch between host and otg modes. Details here:
http://www.internettablettalk.com/fo...0&postcount=12

Ideally it would be best if there was the USB icon in status bar where tapping it would open a menu for enabling host or otg mode, similar to the current behavior to disconnect device if one was attached in host mode. Unfortunately my programming skills are not yet up to that task...