Yeah, it's good, but it won't suck sods of grass out. Good for moss and leaves. The tools are a bit naff that come with it, ie cheaply made. Have you used a vac before? One thing I notice is that you think the gutter is clear and you check and there's still cr@p up there. You can feel the muck with the nozzle usually, but, I struggle to clear the gutter in one go (always missing some muck). Good for out of reach off ladder gutters though.
Buy some pro gutter tools and a Harris 5m pole. Much easier to do a gutter over a conny with these than a vac!