Open floor plans would probably work great for people like that. I prefer to not be pre-empted from my current task, and to have a written record of the things you wanted to tell me, so I can refer to it later. Face-to-face conversations are fine if I'm not already doing something else, but don't force me into one just because you're doing your "manager walk" or can't be arsed to have a specific agenda for the conversation.
If I have a door, I can hang a "do not disturb" sign on it, and lo, I am not disturbed. Otherwise, it may just be closed because the compressor from the fridge in the break area bothers me. I don't mind interruptions, provided they are more important than what I am currently doing, but it seems like open plans lower the threshold for interruption. Some people see that as also lowering the threshold for collaboration. But there are ways to design a space to encourage one without also encouraging the other.