Thanks Paul, you're really very good at criticism. (no criticism intended)

"It's a shame the brush is raster (pixels are for squares)." This is why I made the comment in my original post.
If you know how to make a vector brush out of the main vector texture I'd be glad to know.
There is actually a Webinar this afternoon from Astute Graphics, so I'll raise the question there and hopefully get some feedback.
Bob.