Yes. The scripting system will essentially allow you to do anything, so there won't be anything preventing you from making your own third-person camera.
Version 1.0 will probably have a very basic third-person camera script included, but it will be more like a demo to show how something like that could be built with scripts.
I do plan on eventually making a more complete version though, with things like target locking and more cinematic movement/controls, but it won't be until after ezgb 1.0 is released.