Pros
They give you the ability to move around within the company. They post internal jobs for their employees, and if at some point you want to move up the ladder, it's easier to do so without having to leave your company.
Cons
They are in the middle of a corporate wide IT restructure, and as such their departments are in a mess right now. Also, they give out bogus titles to their employee's. Instead of going with industry standards, they let job titles come to them in a dream. Most people don't care about this sort of thing, but it could be something that hurts your resume at some other point in time. On another note, if you don't like to travel, stay away from this company, because being in the IT department, EIT, or BAE-IT, you will be on travel. I don't mind it, as I get to see places I've never seen or thought I would get to see.