Somebody doesn't like Dura Ace 7900
Mark Legg, Katie Compton's husband and apparent mechanic and manager, doesn't seem very thrilled with the new Dura Ace stuff. If you don't know, Katie Compton is the best hope the USA has for a world championship in cyclocross. She was second in the world championships last year, and third this year.
They don't have an equipment sponsor, so they purchase their own components. First they ran Campagnolo, but I guess they had shifting issues and recently moved to Dura Ace 7900.
First Campy, now Shimano. I wonder what the deal is. When shifters get full of dirt, they don't work so well. That shouldn't be a surprise, especially to someone with his skills. And hey, they can be flushed out with the magical elixir known as WD-40.
I don't understand why they haven't gotten a sponsor yet. He must be very tough to deal with. Weird.

http://cyclingnews.com/tech.php?id=tech/2009/revie...
I run bar-ends on my MTB and they've worked out really well-- even in the short-track races.
Full disclosure: I'm just Master-B mid-pack fodder so whadda I know. :)