IBB not such a foreign concept?

I was struck by the fact that in discussion of collective bargaining, IBB was not only mentioned, but also the format used by some districts in the state of Illinois. When I went hunting at the beginning of the course for the collective bargaining agreement, I had a nice chat with my principal about differences between Iowa and Illinois--in fact when I went through the IBB training last year with another former Illinois teacher, we were told what a "different landscape" the two states were in terms of bargaining. My principal, herself a graduate of Western graduate, told me that IBB would be bad mouthed and presented as a 'give everything to the faculty approach' to bargaining. That in the back of my head, I was surprised to find the opposite--and the fact that districts in IL such as Pekin were using this system. Personally, I have found that with consistent communication and trust, this format works well, at least in our district