I really feel that the open office environment really only makes sense for junior programmers. For them, it's great to have a pool of knowledge(experienced programmers) around all the time to push them along, bounce ideas off of, and in general, act as mentors.
I think when you really start getting to the point where you know what needs to get done, and approximately the right way to go about it, open office loses it's luster very quickly.
I would agree, but at least for me, there is always technology I am working with that I am not an expert. For example, I am kind of the javascript guy at work, so people come to me with js questions. When I have to make a change to something on the server, or even debug something on the server, I could save a lot of time asking someone else how the server works.
I think when you really start getting to the point where you know what needs to get done, and approximately the right way to go about it, open office loses it's luster very quickly.