I was told by a company that does £1000's worth of gutter cleaning on apartments, best thing is to survey first, wipping round with a cam on a wfp, while viewing a screen, then most of the time only 10-25% is blocked, so he then uses agitation tool to flick out most, then last resort uses vac, therefore gets loads done in a day....
so no point in having the cam on the vac end........view first seprately, weather this system would work on domestic houses.