Architects not programming

The other day I was giving a talk on Microsoft about Microsoft Visual Studio 2010 focused on Architect. My talk was specifically about Test Driven Development.

Hadi Hariri asked the audience how many of them developed and used unit tests. The curious thing about this question was the answer: about 150 people raised their hands about 10 people.
This means that most attendees were architects, project managers, etc.. and  only 10 developed.
My question is, can you be a good software architect, and not to program?. For example, how can you recommend using Entity Framework if you've not used it and no known problems (or the actual benefits) that can give it to you?.
I understand that the role of an architect is not programming, but from my point of view, an architect should always to be updated and not should disconnect from the technical part, participating developing certain projects (not with a large load course).

I think that reading only, yout don’t get enough knowledge to be able to define which components, technologies or products are best suited to develop an application.

Regards.