Check out the app Launch Center Pro. You can actually create a custom OmniFocus launcher on your phone to jump to any context or perspective. You can also add new items to your inbox with one tap. Here's the article that got me started:
http://bettermess.com/omnilaunch/ Omnifocus for iPad doesn't (currently) support the ability to link to perspectives, but if you send a feature request to the support ninjas, your vote gets added to the dev support db.