I have gotten long arms carrying around large studio flashes to and from gatherings I am to photograph. The problem is that the gear is large and with cables everywhere its easy for people to trip up. However if you do use flash in such circumstances without some sort of diffuser then you get harsh shadows,
This flash discusser does the job. Extra light and fitted to a flash, on or off camera gives enough diffused light to highlight your subject without being overpowering. Easy to fit, though the first few times it can be a trifle fiddly and with it in my camera bag, there us a great advantage in not having to carry about those studio flash stands and lights. Does replace them but certain worth considering in small gatherings.