To date. for events I do, if there is to be video, which I provide, I have a great video guy with a professional video camera which he uses. He's given me some suggestions, but most are not all that useful for me for travel. With travel, I've got space, and weight limitations I need to consider, and there is no doubt that my primary work is still photography.
By the way, I do have a clapper board. It's an electronic one. It's my iPad with a clapper app. It's amazing how useful tablets are, and what apps are available for them for photography (not taking photos themselves but reference material, and accessory apps). For me it isn't a replacement for my laptop, however...but I digress.