I can only speak for my own program (Dominican University), which I would not describe as radical, although I had several professors who were sympathetic and knowledgeable when it came to radical history.
A common complaint about almost every library school is that it's all theory, no practice (see, for instance, many of the education articles at LISCareer.com), but theory can be useful. You can, for instance, present collection development theory to a library board to explain what you are doing, or trying to do.
I work in a very rural library and have found both conventional education and my Radical Reference colleagues helpful in figuring out how to be radical and rural, and I'd be happy to talk about it more. (I think there's a way to contact me via the site, but I'm also e-mailing this to the questioner.)
