I've always recorded vids when wizzing around doing a gopro gutter survey. There are several advantages of doing so as follows.
1. have a perment record of the job in hand taken on that day including any access issues so can play it back anytime either by the camera lcd touch screen (in my case), wifi smart device, played back through a pc or mac and saved to a portable hard drive for safe keeping.
2. can show customer there and then by playing back the vids or still images from the vid
3. Identify & highlight any issues with the roofline like slipped/broken tiles, broken brackets, leaking joints,(including gutter creap), gutter ballons in downspouts, blocked downspouts, gutter guards installed, gap between guttering and tiles overhang, general areas of concern etc.
4. can attach still images to email customers with or without quotes.
Just to name a few so again doing a proper camera survey is a no brainer if you ask me