It does make it easy for other people to see what you are doing. Back when I worked at EMI Central research this lead to a lot of half-empty cups of cold coffee.
At Cambridge Instruments we were less inclined to think about what other people were doing - or perhaps I might have been senior enough that there weren't all that many people who would have been game to do it. It can be very helpful, if you don't mind looking a bit silly from time to time.