I do it. I have my best 2 sleepers in the same room. I too thought this would end in disaster so I made sure to try it out when my sanity was fully in tact.

It works great! They have both been with me for a while, so they know the expectation is to sleep or at least stay quiet.

Even when one has a cough the other doesn't fuss.

I would suggest you try it on a day that you have lots of patience and lots of sanity to spare... just in case it goes horribly wrong. LOL