It looks like a 2 band version of this brush:
http://draft.blogger.com/blogger.g?blogID=980228658122186629#editor/target=post;postID=4419740477967712715
My Thater sits alongside many others in my collection. For what it is - a decent silvertip at £87 for a 22mm knot, it's a lot of money. I wasn't overkeen on little blotches of white paint left on my brush so forgive me when I chuckle at the phrase "arguably the best brush currently available on the market"
It does look a nice brush but the price is needed to get it in context.