as all our work is commercial, im interested in a pole that can make us more productive, but I have serious doubts about the longevity of this type of pole. must of our work is big, ie working at one height for over an hour. so this type of pole would prob be of no benefit to us. so thats why i questioned peters statement. I can understand what foxman is saying, although he could say it a little better 
lets hope peter doesn't have to give too many refunds with his money back offer.
I don't understand where the longevity doubt comes in, do you mean that you can't see it saving much time? or is it something different?
I understand where your coming from when you say the pole is set at the one height for over an hour, but there is no disadvantage with a clamp less pole over a clamped one. How many times on a long window have you noticed something on the level above that is not cleaned properly? You have to lower the pole, adjust the pole to heighten it, put it back up to the window, only to lower it down again to carry on where you left off. Now imagine a quick flick and you are on the bit you missed, and two seconds later you are back working where you left off. This is only one advantage with a clamp-less pole on the type of windows you mentioned.
But of course the sections that the pole is made with in the first place has to be of at least the same standard as the sections available with a clamped pole. But we are talking new technology here, and could the sections be any better than what is available today? Maybe, how much of todays poles are designed with the clamps in mind, and if there is no clamps can the sections be made differently? We will have to wait and see.
Peter