Activitate Voice Dictation from Bluetooth Keyboard

Getting to know my new iPad and I really like the voice dictation, but I can't figure out how to activate it from my Apple Bluetooth Keyboard. My workaround is to turn off the keyboard so I get the onscreen version. Is there a better way?

As of iOS 5.1, Voice Dictation is not capable of being started from external keyboards.

There is a workaround. The solution is that when you want to dictate, press the ⏏ key (eject) on your external keyboard. This should bring up the virtual keyboard on the screen, from which you can then start dictation.

Note: This key doesn't work like other function keys until you have tapped into a text entry field and have the flashing cursor.