[whpalmer4]

You can open a given perspective by opening the file that contains it. If you add your favorite perspective to the dock, you're all set. Perspectives are found in the Library/Application Support/OmniFocus/Perspectives folder. Add a file to the dock by dragging it to the dock to the right of the line that shows up between applications and the trash can.

Another approach would be to use Quicksilver or another launch tool to open the perspective file.