Darn, I've been waiting for a set of these (you can see my post from a while back in the wanted section) and really want to buy them, but I really wanted the bar clamps that came with them.
I don't want to use my 07 factory bar clamp because it covers the whole middle portion of the bars and I wanted to mount a gps and cell phone there. The other reason is that there have been reports that you cannot lift the tank when you have these bar risers and the 07-09 factory bar clamp installed.
Also, if you look on twistedthrottle.com, they talk about the old and new version of these risers... what did they change?