I don't often get work because I have a vac, although I do get a few due to the height issues, most of my work is because people want their gutters emptied.
Many customers are dubious of it's capabilities but are normally impressed when it starts up. I have it because it's the only way I want to empty gutters to be honest.
There is plenty of gutter clearing work out there, maybe just having a vac would make no difference to gaining work.
I think also that Omnipole realise the machines limitations and so sell the pressure washing outfit to go with it to try and blast the downpipes.
In my pic I am clearing a gutter at 50' I got that job because the alternative method would have cost the customer thousands.