Just as the title says, you can enter a URL scheme in App Cubby’s [Launch Center](http://appcubby.com/launch-center/) which takes you directly into OmniFocus’ Quick Entry screen.
It’s dead simple [given this forum post](http://forums.omnigroup.com/showthread.php?t=23210&highlight=iPhone+quick+entry).
1. In Launch Center tap `Add New Launch…`
2. Tap `Launch Website/App`
3. Enter a title of your choosing.
4. For the URL field type: `omnifocus:///add`
5. Tap done.
Works like a charm. This has moved Launch Center to my home screen.
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