I used an ettore reach pole and a ettore backflip for around 10 years, didnt even possess a ladder. It worked really well for me and I had one complaint in that time, I think after somebody on here said they were doing .... houses a day so I rushed into the next days work.
Also done a fair bit of commercial with the trad pole, again no complaints.
Although i now produce my own pure water and use wfp, I still do a lot of my work with the pole.
Before wfp I think it was the most missed opportunity, low cost, faster than ladders, the pole will fit into a car so no need for a roof rack etc.
A lot will say ' you will get runs from the top' but if you learn to 'cut' the top edge and wipe the blade after every two pull downs you will not get complaints.
I would endorse getting a wfp if you can afford it. It does wash the frames as well.