After some teething troubles with the brush, I came out swivelling today for the first time.
My findings so far:
Well only my first day, so I'll have to give it time.
Very light brush, in fact so light I found myself pushing hard on the pole to scrub! This caused the brush to often swivel uncontrollably on the end of my 18' pole. I got the hang of it a bit more as time went on. I like the narrow jets Gaz has fitted, less water, more power. I prefer pencil to fan anyway.
i'll have to wait and see if I get any complaints next time around.
So far, (after one day) I think the swivel idea is very good, I need to develop the technique, so I'll give it time. Shame Ionics don't do it, because I find their brushes best, (not a shame for Gaz though

).
Not knocking Gaz, though, decent guy to deal with and speak to.
Just speaking as I find.