We do a lot of gutter clearing and find the vac works for most things. We do have a beast of a ladder though if needed, a Zarges 3 Part Trade Skymaster Combination Ladder - 3 x 14 rungs. We only need it for access for one job we do twice a year but good to have. I don't like to use ladders though really unless absolutely essential.
I like that setup you have Nick, is that a screwdriver attached to the pole to motor the tool? I am finding a few jobs where we need to get up there and I want to minimise this, I've got a few 3 storey jobs coming up with loads of foliage in the gutters. We use a SkyVac commercial machine.
We also have a regular job with very wide box gutters and the vac struggles with that a bit too as can't get the angle to get in there properly.