I have clients that have used male F/A for a variety of different reasons. I know of one male F/A on a Gulfstream that helps sling bags (not many women strong enough) and is used as ground driver / body guard. Others have used male F/A because of jealous wives and still others because of culinary skills. For any private gig, I think its helpful if you have many different skills as that helps the owners enhance the experience and lower the bills!