Ever think about getting a job?  How long have you been in school?  I kind of feel like a PhD in architecture is unnecessary.  You only need a MArch. be an architect, and in some states, like my home state of Tennessee, you don't even need that.  I'm not sure how much having a co-degree in civil or electrical engineering will help.  Maybe it will, I don't really know.  At a certain point, you are gilding the lily with all the degrees.  Professional work goes much further than more schooling.

Of course, you could be working and I don't know it.  Just my two cents.

@jdparnell1218

Thanks for the quick response. 

You have the point there, and I understand. I used to have about 1 and half year work experiences in architectural consultant. I am pretty sure I am still much lacking in practical experience compared to many of my friends who are in architectural field. And we often meet to share experiences around practical and academic stuffs.

However, my desire for the future is working in a academic environment (teaching and researching), and the architectural projects I dream of  will be oriented to a more kind of experimental type project. I know there is not much to research on in architectural field. It is however I found that dealing with CAD, BIM etc are quite a complex and interesting stuffs to research on in itself. I know some of the great schools such as Georgia Tech has a lot of their architectural PhD students focusing in these CAD area (BIM, IFC etc). I know when it come to this issue, there will be many pros and cons. And eventually its just a matter of perspective whether an architect should even bother to do a PhD degree, if perhaps he or she had a chance for it. 

@Veuxx 

To be frankly speaking, I might have a little of that luxury. I came from a third world country. Part of my future dream is to also be able to educate the people there and expose them to some of the technologies I learned. 

More power to you.  If you have a Masters, you have the degree you need to teach.  Are you an adjunct teacher or a TA at your school?  If not, I think one of those two things would be your next logical step.  From what I understand, a M Arch. degree and a handful of experience in the field should be enough to allow you to teach somewhere, whether it be a design studio or computer applications.  The PhD will probably help you as well.

Good luck in your future.