I don't think that a formal Degree in Engineering is necessary for you to qualify as an Engineer.
While I do hold a Degree, I have met many wonderful Engineers that were self-taught. Likewise, I've met a number of people with Engineering Degrees ... They couldn't figure out which end of a lightbulb to put into the socket.
Iam a recent EE graduate however it will be another 3-4 years before i am a licensed engineer (P.Eng). I guess the definition of engineer depends more on the qualification then the paper. BTW the pointy end of the bulbs goes into the screw-thing-a-ma-bob if i remember correctly