When you're out on vacation in Egypt, making your own Brandon Li-esque travel video. You pay the extra $50 to go inside the Great Pyramid. Then right before you go in, the security guy says, "I'll take that." and puts your GH5 on the shelf until you get back out. Then you'll be reaching for the ol' iPhone
Source: Happened. But it was a GF-1 and an iPod touch. And, if I'm being totally honest, I wasn't even making a video.