[whpalmer4]

The snag is that the URL field in the calendar only holds URLs, which don't include a label, just the destination. Omni could in theory provide a URL for an action which gave you a human-readable string (the action name, for example) but iCal doesn't really display the URL very nicely (at least for reading purposes) if it is of any appreciable length. Also, the URL would probably have to contain some gibberish (like the current internal ID that you get in a link to an OmniFocus action or project) so that OmniFocus could handle discriminating between two identically named items and handle the case where you edit the name of the item after pasting the link.