Kev, are you able to suck and record at the same time from the same pole?
Yes you are able to do that, but I don't because it's very easy to bash the camera and its very difficult to work while viewing the screen live due to reflection on the screen, position etc.
I use my camera on a different pole, I record the survey ( I dont even watch the screen as its inside my bag) then I play back the footage. I then vac by feel and then re-survey when Im done vacuuming. A camera is an excellent tool for surveying the job and checking your work but mostly you can tell if your clearing the gutter by feel and sound. To be honest on some domestic type gutters I dont bother with a pre-survey I just vac as its quicker.