Watching the results very carefully today.
So far:
Does it make the brush glide? Yes, a bit more than usual, makes scrubbing a little easier.
Does it reduce spotting? Not so far, wasn't an issue for me before.
Are the little bubbles helpful? A hindrance for me but early days. Still slowing me down as I rinse more. The bubbles slow the flow down running off the window, I don't like that.
Does it turn beading glass into sheeting glass? No.
Does it clean wood or Upvc better? I think they came up cleaner. Old it's and stains remained but spots and stains since last clean came off well and quicker.
Does it remove fly poo, snail trails, spider spots etc? No
Just my opinion so far.