I think this is the key. Are interrupts to one person also usually of relevance to another? Does the early knowledge of others' ideas, completions, and course corrections make up for the distractions? If so, a 'war room' arrangement may work.
On the other hand, mixing people on uncoupled projects, with different deliverables, whose interrupts are irrelevant to each other: distraction disaster.
I think this is the key. Are interrupts to one person also usually of relevance to another? Does the early knowledge of others' ideas, completions, and course corrections make up for the distractions? If so, a 'war room' arrangement may work.
On the other hand, mixing people on uncoupled projects, with different deliverables, whose interrupts are irrelevant to each other: distraction disaster.